Animated ppt on human digestive system

Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Animal Nutrition Chpt 41 (all) IB-202-10 4/7/06 Exam April 10, 7pm 100 Noyes Hall.

Midlands —price fixing on lysine Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings Some animals have adaptations That help them through periods when their bodies demand extraordinary amounts of protein. Penguin degrades/ intestines Small intestines Rectum Anus Parotid gland Sublingual gland Submandibular gland Salivary glands A schematic diagram of the human digestive system Pancreas Figure 41.15 Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings The Stomach The /


Left to itself, the human body would be in big trouble, as the internal environment provides attractive conditions for the growth of bacteria, viruses.

materials are deposited into the midgut. Needed materials continue through the digestive system, while wastes continue and are excreted through the anus. Kidneys:/several mechanisms have evolved, each appropriate to the habitat or survival of the animal. Aquatic animals excrete NH 3 directly into the surrounding water Mammals convert NH 3 to /-enters). It is most concentrated when it descends the collecting duct. 5. In humans, digestion occurs in all of the following locations EXCEPT: a. The duodenum b. The /


Bilateria Having completed the radially symmetrical Cnidarians and Ctenophores we now move on to the remaining animals, all of which are bilaterally symmetrical.

animal to exchange gas and lose wastes by diffusion. Four classes in the Platyhelminthes. Turbellaria are free living but the Monogenea, Trematoda and Cestoda are parasitic. Four classes in the Platyhelminthes. Turbellaria are free living but the Monogenea, Trematoda and Cestoda are parasitic. Nutrition The digestive system/ locations such as the brain, which is frequently fatal. 8.16 Cysticerci in human brain Tapeworm manipulations of hosts Continuing the theme of parasite manipulations we’ve seen this/


Chapter 23 Invertebrate Diversity Section 1 –Diverse animals share several key characteristics Section 2 –Sponges are relatively simple animals with porous.

attack the roots of plants and tissues of animalshumans can be hosts to at least 50 species of roundworms parasites. One disease that can affect humans is called trichinosis  humans acquire this disease by eating undercooked pork or /digestive tract is not segmented and runs the length of the animal, along with the nerve cord and two main blood vessels. FIGURE 23-12 FIGURE 23-12 Annelids have a closed circulatory system. Annelids have a closed circulatory system. Definition: blood transport system/


Animal Nutrition Example 1: Nutrition Homeostatic Mechanisms 1 (function)

animals & plants – cockroaches, bears, raccoons, humanshumans evolved as hunters, scavengers & gatherers Getting & Using Food Ingest – taking in food Digest – mechanical digestion Breaking food into smaller pieces – chemical digestion breaking down food into small molecules to be absorbed into cells Absorb – absorb across cell membrane Diffusion, active transport Eliminate – undigested extracellular material passes out of digestive system intracellular digestion extracellular digestion Digestive systems/


Introduction to the Animal Kingdom Of all the kingdoms of organisms, the animal kingdom is the most diverse in appearance Some animals are so small that.

Ectoderm: becomes epidermis/nervous system –Mesoderm: becomes the muscles/bones/reproductive organs –Endoderm: becomes the digestive system –Cells begin to fold inward ANIMAL DEVELOPMENT Early Development During early development, the cells of most animal embryos differentiate into three / live in water that carries few nutrients Ecology of Corals Many coral reefs are now suffering from human activity For example, recreational divers sometimes damage coral reefs Silt and other sediments from logging, farming/


Unit 12: Animal Structure and Function, Part A Chapters 40-44.

Part A Chapters 40-44 Part A-Structure and Function Thermoregulation Digestive System Respiratory System Circulatory System Immune System Excretory System Nervous System Muscular System Endocrine System Part B-Repro. and Development Sexual Characteristics Human Reproductive Anatomy Gametogenesis Hormonal Control of Reproduction Embryonic Development Factors That Influence Development Introduction –Recall that animals are multicellular, heterotrophic eukaryotes that obtain their energy/nutrition by ingesting/


Chapter 15: Animal Transport and exchange systems Unit 2: Multicellular Organisms 27/01/20161Mrs Smith - National 5 Biology.

Biology The need for additional absorbing areas in humans Humans have for example – Alveoli in the lungs – Villi in the intestine These greatly increase the surface area for the absorption of oxygen and digested food respectively 27/01/20165Mrs Smith - National 5 Biology The need for a circulatory system Once the essential substances have entered the animal’s body, they must be carried to all/


The Digestive System BY: MARIEGRACE GANUT. Digestive Tracts Not all animals have a digestive tract - Ex. Sponges & protozoa; digestion occurs in food.

filtered water Diagram - p635 Mader textbook DISCONTINUOUS Squids Consume larger meals & store the ingested food for later digestion Diagram – p635 Mader textbook *AP – Know digestive mechanisms in animals such as food vacuoles, gastrovascular activities, one-way digestive enzymes Human Digestive System *AP – KNOW THE PROCESS OF THE DIGESTION OF FOOD Definitions Digestion – a process that breaks down food into molecules that are small enough to enter body cells Absorption/


Nutrition and digestion 1. 2 Nutrition -Carbohydrates, proteins, and lipids -Essential nutrients amino acids fatty acids minerals vitamins -The enough.

human gut and its glands -An overview of nutrient assimilation -Lactose intolerance -Glucose transport How do animals assimilate nutrients Assimilation = Digestion + Absorption to digest is to break up a large molecule into smaller ones. Assimilation (most often takes place in the gastrointestinal tract). There are exceptions… Arachnids inject digestive enzymes into their prey. 28 Guts! 29 30 Giant Tubeworms of hydrothermal vents (Riftia pachyptila) The digestive system/


CHAPTER 33 INVERTEBRATES - NO BACKBONE. More than a million extant species of animals are known, and at least as many more will probably be identified.

fine branching of the digestive system distributes food throughout the animal. Nitrogenous wastes are /digestive tract and use the fluid in their pseudocoelom to transport nutrients since they lack a circulatory system. Their thrashing motion is due to contraction of longitudinal muscles. The nematodes also include many species that are important agricultural pests that attack plant roots. Other species parasitize animals. Over 50 nematode species, including various pinworms and hookworms, parasitize humans/


Chapter 26: Sponges, Cnidarians, and Unsegmented Worms Section 1: Introduction to the Animal Kingdom.

cooked meat containing these cysts, the larvae become active within the human host Once inside the intestine of a new host, they latch onto the intestinal wall and grow into adult worms Roundworms Members of the phylum Nematoda, which are known as roundworms, are among the simplest animals to have a digestive system with two openings – a mouth and an anus Food enters through/


Kingdom Animalia.

, birds, and mammals all have endoskeletons made of bone. Review Questions What are the three types of symmetry? What are some animal examples of each? What are some of the anatomical terms used to describe animals? What type of digestive system do humans have? Circulatory System: FUNCTION = Moves materials to and from the cells Open circulation—fluid pumped from vessels into body cavity, then returned to/


Concept 41.1: An animal’s diet must supply chemical energy, organic molecules, and essential nutrients An animal’s diet provides: Chemical energy, which.

phloem sap of plants https://kleczekbiology.wikispaces.com/Digestive+System http://en.wikipedia.org/wiki/Aphid Bulk Feeders Eat relatively large pieces of food Most animals, includes humans http://aspiringbackpacker.com/2012/05/5-huge-eating-/ Sphincter Small intestine Gall- bladder Liver Sphincter Pancreas Large intestine Pancreas Stomach Figure 41.9 The human digestive system. Small intestine Rectum Anus Large intestine Schematic diagram Duodenum of small intestine Rectum Anus Peristalsis-rhythmic /


Animals Eat Food Chap 41 (nutrition).

a substrate feeder Figure 41.6 Four main feeding mechanisms of animals Caterpillar Feces Fluid Feeders Fluid feeders suck nutrient-rich fluid from a /human digestive system Small intestine Small intestine Large intestine Rectum Anus Appendix Cecum A schematic diagram of the human digestive system Fig. 41-10b Salivary glands Mouth Esophagus Gall- bladder Stomach Small intestine Liver Figure 41.10 The human digestive system Pancreas Large intestine Rectum Anus A schematic diagram of the human digestive system/


Nutrition and digestion Please read chapter 43 in your text from one end to the other 1.

of gut designs -The human gut and its glands -An overview of nutrient assimilation -Lactose intolerance -Glucose transport How do animals assimilate nutrients Assimilation = Digestion + Absorption to digest is to break up a large molecule into smaller ones. Assimilation (most often takes place in the gastrointestinal tract). There are exceptions… Arachnids inject digestive enzymes into their prey. 26 Guts! 27 The digestive system in many (but not/


CHAPTER 42 CIRCULATION AND GAS EXCHANGE

blood, the lymphatic system transports fats from the digestive tract to the circulatory system. Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings CHAPTER 42 CIRCULATION AND GAS EXCHANGE Section A: Circulation in Animals (continued) 9. /because of this efficiency advantage, birds perform much better than mammals at high altitude. For example, while human mountaineers experience tremendous difficulty obtaining oxygen when climbing the Earth’s highest peaks, several species of birds /


Chapter 21 Nutrition & Digestion

a sac with a single opening This is called a gastrovascular cavity Example: hydra In most animals, the digestive compartment is an alimentary canal This is a tube running from mouth to anus This tube is divided into specialized regions that process food sequentially HUMAN DIGESTIVE SYSTEM The human digestive system consists of an alimentary canal and accessory glands When food is swallowed, it is moved through the/


Anaerobic Digestion (Small-acale)

fertiliser Production of renewable energy The mixing of animal dung with blackwater increases its fluidity and results in optimal moisture conditions for the anaerobic digestion. Human manure has a lower content in organic matter /Anaerobic_Digestion_high_resolution.pdf [Accessed: 27.04.2010] MUENCH, E. (2008): Overview of anaerobic treatment options for sustainable sanitation systems. In: BGR Symposium „Coupling Sustainable Sanitation and Groundwater Protection“ 14 – 17 Oct 2008, Hannover, Germany. Eschborn/


Human Diseases A Systemic Approach Sixth Edition

Jersey 07458 All rights reserved. Mulvihill, Zelman, Holdaway, Tompary, and Raymond Human Diseases: A Systemic Approach, 6e Organs of the Digestive System Mouth Salivary glands Pharynx Esophagus Stomach Liver Gallbladder (GB) Pancreas Small intestine Large intestine Rectum Anus Click on the screenshot to view an animation on the digestive system. Return to Directory The Digestive System Gastrointestinal system Gut Alimentary canal Approximately 30 feet of continuous muscular tube between mouth/


Invertebrates I: Sponges, Jellyfish, and Worms

of the bones along the back of an animal An INVERTEBRATE is an animal without a backbone Most animal species are invertebrates Skeleton – a structure in animals and humans that provides mechanical support for muscle attachment and maintaining/digestive system does mechanical digestion occur 3. How does an earthworm breathe? 4. How can our study of earthworms help us exercise dominion over the earth? Invertebrates II: Mollusks, Arthropods, and Echinoderms 16A Mollusks Mollusks include the following animals/


I.RESPIRATION: GAS EXCHANGE II.CARDIOVASCULAR SYSTEM III.DIGESTION IV.WATER BALANCE V.TEMPERATURE VI.CHANGING CONDITIONS: SEASONS VII.LOCOMOTION ADAPTATION.

-gas travels through resp surface via diffusion -vertebrates are large, so must have a complex system of respiration -Aquatic animals: Gills -Terrestrial animals: Lungs Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings ADAPTATION I.RESPIRATION: GAS/ IN HUMANS) 6. REDUCE METABOLIC RATE WHEN DIVING (OXYGEN CONSUMPTION) http://www.unb.ca/courses/biol4775/SPAGES/SPAGE2.HTM ADAPTATION III. DIGESTION - Food has to be broken down for energy -Structural adaptations of digestive systems are /


Resources gathered by animals Food for energy and macromolecules Water Shelter from enemies (Enemy Free Space) Space Thermal energy Chemicals used for.

usually required in small amounts. –Mineral requirements vary with animal species. –Humans and other vertebrates require relatively large quantities of calcium and /system enables organisms to ingest additional food before earlier meals are completely digested. Some animals use external digestion for the initial stages of digestion Some seastars (Echinodermata) evert their stomachs out of their mouths to partially digest prey before retracting their stomachs back into their bodies Spiders inject digestive/


Regents Biology 2006-2007 Animal Nutrition Human Digestion.

 diffusion  active transport  Eliminate  undigested material passes out of body intracellular digestion extracellular digestion Regents Biology Digestive systems Everybody’s got one! Regents Biology Human digestive system Regents Biology Mouth  Functions  mechanical digestion  teeth  break up food  chemical digestion (saliva)  amylase enzyme  digests starch  mucus  protects soft lining of digestive system  lubricates food for easier swallowing  buffers  neutralizes acid to prevent tooth/


Chapter 47 The Digestive System.

Feces exit anus Smooth muscle sphincter (involuntary) Striated muscle sphincter (voluntary) Variations in Digestive Systems Digestive tracts of some animals contain bacteria and protists that convert cellulose into substances the host can absorb Minor in humans Essential to some animals Herbivores have longer digestive tracts Greater time for digestion of cellulose Modifications to enhance digestion of plant material Ruminants have a four-chambered stomach Contents can be regurgitated and/


UNIT 2 Digestion and Nutrition. Human Digestive System Function The main function of the digestive system is to break down large macromolecules (proteins,

to 40°C. Temperatures outside of this range can cause denaturation of the enzyme. Enzymes are very important in the human digestive system. Their production and accumulation in the body are carefully controlled so that homeostasis is maintained. The Liver Almost all /of Proteins Complete Proteins o contain all of the essential amino acids o beef, chicken, fish, eggs, milk, and many animal products Incomplete Proteins o do not have all of the essential amino acids o vegetables, fruits, grains, seeds, and nuts/


Food and Digestion Junior Science. The structure and functions of the human (as an animal) systems: skeletal, digestive, circulatory, respiratory. All.

Science The structure and functions of the human (as an animal) systems: skeletal, digestive, circulatory, respiratory. All vertebrates share the same basic body plan, with tissues and organs functioning in a similar manner. We focus on the human body, studying structure (anatomy) and function (physiology). 6a The body is made up of different organ systems Different tissues functioning together for a common purpose are called organs/


The Digestive System Chapter 43. 2 Types of Digestive Systems Heterotrophs are divided into three groups based on their food sources -Herbivores are animals.

lack flat grinding surfaces -Herbivores have large flat teeth suited for grinding cellulose cell walls of plant tissues -Humans have carnivore-like teeth in the front and herbivore-like teeth in the back 18 Mouth and Teeth / a common cavity, the cloaca, where the urinary, reproductive, and gastrointestinal tracts join 41 Variations in Digestive Systems The digestive tracts of some animals contain bacteria and protists that convert cellulose into substances the host can absorb Ruminants have a four-chambered /


THE DIGESTIVE SYSTEM AgriScience 332 Animal Science #8646-E TEKS: (c)(3)(A)

(monogastric). The average capacity of the digestive system and the types of feed best suited to the animal varies among the species. Animal:Capacity (in liters) Cattle356 Sheep & Goat 44 Horse 211 Swine 27 Dog 7 Human 6 Capacity of Total Digestive System (Campbell, Kenealy, and Campbell, 2003) Swine have larger digestive capacity per pound of body weight than dogs or humans. Their digestive system is better suited for concentrated feeds/


1 2 Think about… 6.1 The process of human nutrition 6.2 The human digestive system 6.3 Ingestion of food 6.4 Movement of food along the alimentary canal.

of human nutrition digested food faeces 2 digestion ( 消化 ) 10 The five main processes of and. nutrition in humans are absorptiondigestion ingestion egestion assimilation,, 6.1 The processes of human nutrition 11 6.2 The human digestive system What does our digestive system ( 消化系統 ) consist of? 12 6.2 The human digestive system Digestive system Alimentary / the food into a bolus before swallowing: teeth bolus ( 食團 ) tongue Animation 6.4 Movement of food along the alimentary canal 46 during swallowing: 1 /


Animals, Part 1 Invertebrates. ANIMAL KINGDOM Welcome to your Kingdom! Animal diversity extends far beyond humans, dogs, cats, birds, and fish. There.

periodically sheds the old cuticle and secretes a new, larger one. NEMATODA Nematodes have a digestive canal, although they lack a circulatory system. Nutrients are transported throughout the body by way of a fluid. Nematodes have muscles that/the roots of plants. Some nematodes parasitize animals. Humans host at least 50 nematodes species, including pinworms and hookworms. One notorious nematode is Trichenella, the worm that causes trichinosis. Humans acquired this nematode by eating undercooked infected /


THE DIGESTIVE SYSTEM 1. Food for Energy and Growth  The food animals eat provides both a source of energy and essential molecules that the animal body.

both plants and animals  Single-celled organisms, as well as sponges, digest their food intracellularly  All other animals digest their food extracellularly, within a digestive cavity Digestion 15  Phases  Ingestion  Movement  Digestion  Absorption  Further digestion Digestive System Organization 16  Gastrointestinal/of the sphincter prevents food in the stomach from moving back into the esophagus  in humans, stomach contents can be brought back out during vomiting  the relaxing of the sphincter /


Nutrition ANSC 2. Warm Up Food Labels: Grab a bag of Animal Food from the lab. Please remember where you got this from! Answer the following: – Who is.

Digestive Systems – Mono Gastric – Modified Mono Gastric – Ruminant – Poultry Monogastric Carnivores and omnivores have a “simple stomach” System only has one compartment Examples of mono gastric systems: swine, rabbits, humans Monogastric break down Small Intestine Its Job: enzymatic digestion and absorption – Digests/ they are giving their animals? Are these reasons different for Producers of livestock vs. companion animal owners? – 2. What are the different types of digestion systems, and give example on/


The Skeletal and Muscular Systems 1.Provide the body with shape and support 2.Allow for motion 3.Produce red blood cells 4.Produce immune response cells.

.Smooth—involuntary movement— movement of internal organs. 3.Cardiac—striated but involuntary— heart muscle. Muscles of Human Body Tissues Necessary for Movement 1.Bone—gives body structure and support 2.Muscle—specialized tissue that contracts /Digestive System The purpose of the digestive system is to breakdown food into simpler molecules (glucose, fats and proteins) that can be absorbed into blood and used by the cells. Digestion In Other Animals Simple animals like jellies have a two way digestive system/


Animalia Chordata By: Josh, Jeremy and Zach. Definition of Chordata Chordates are animals which are either vertebrates or closely related invertebrates.

primary method of locomotion is hopping, jumping, or leaping. The front legs of a frog are like the arms of human since they are weak for jumping. The frog has hind legs which are especially designed for leaping. Frogs have salutatory/frogs excrete ammonia mainly through the gills Crocodile (Reptile) Digestion Digestion - The crocodile’s digestive system is the most acidic of any animal’s and that’s why it can digest bones, shells and hooves. - Crocodiles digest food just like we do. The only difference is /


Regents Biology 2006-2007 Animal Nutrition Human Digestion.

’s got one! Regents Biology Do Now  Label the Diagram you printed from last night Regents Biology Human digestive system Regents Biology Mouth  Functions  mechanical digestion  teeth  break up food  chemical digestion (saliva)  amylase enzyme  digests starch  mucus  protects soft lining of digestive system  lubricates food for easier swallowing  buffers  neutralizes acid to prevent tooth decay  anti-bacterial chemicals  kill bacteria that enter mouth with food All that/


Regents Biology 2006-2007 Animal Nutrition Human Digestion.

 eat animals & plants  cockroaches, bears, raccoons, humanshumans evolved as hunters, scavengers & gatherers Regents Biology Getting & Using Food  Ingest  taking in food  Digest  mechanical digestion  breaking up food into smaller pieces  chemical digestion  breaking down food into molecules small enough to be absorbed into cells  enzymes  Absorb  absorb across cell membrane  diffusion  active transport  Eliminate  undigested material passes out of digestive system intracellular digestion/


Mammals. Class Mammalia Small number of species ~4500 But probably more successful than most animal groups (except insects) at exploiting all available.

Digestive Systems Humans have vestigial cecum - appendix Digestive Systems Fore-gut approach Cattle, deer, sheep, antelope are ruminants Have huge, 4- chambered stomach where digestion occurs Fore-gut approach Cattle, deer, sheep, antelope are ruminants Have huge, 4- chambered stomach where digestion occurs Digestive Systems/Polyestrous - recurrence of estrus during breeding season Mice squirrels, tropical animals Reproduction Humans and Old World monkeys have slightly different cycle Post-ovulation period /


This work is licensed under a Creative Commons Attribution 4.0 International License (CC-BY). Concepts of Biology Chapter 15: Animal Nutrition and Digestive.

food and stores waste material until it is eliminated. This work is licensed under a Creative Commons Attribution 4.0 International License (CC-BY). Concepts of Biology Chapter 15: Animal Nutrition and Digestive System For humans, a balanced diet includes fruits, vegetables, grains, and protein. (credit: USDA) This work is licensed under a Creative Commons Attribution 4.0 International License (CC-BY). Concepts of/


Animal Digestion and Nutrition. Nutritional requirements Animals are heterotrophs –need to take in food –Why? fulfills 3 needs… fuel = chemical energy.

bears, raccoons, humans humans evolved as hunters, scavengers & gatherers Feeding adaptations suspension feedingsubstrate feeding fluid feedingbulk feeding Food processing Ingestion –eating Digestion –breaking food down into molecules small enough for the body to absorb –enzymatic hydrolysis Absorption –animal cells take up small molecules Elimination –undigested material passes of digestive system intracellular digestion extracellular digestion Digestive systems Mammalian digestive system Alimentary canal/


Common Requirements of living things - ANIMALS – Chapter 5.

alimentary lining. Amylases- Break down carbs Proteases- Break down protein Lipases- Break down lipids http://health.howstuffworks.com/human-body/systems/digestive/adam-200086.htm Introduction to the Human Alimentary System animation Digestion Stomach - majority of digestion occurs – Mechanical digestion occurs as the muscles crush and move the food. – Chemical digestion also occurs in the stomach, with the secretion of gastric juices with have enzymes that break down the food/


Evolution of Animals Fossil record of invertebrates is incomplete because soft-bodied animals are poorly preserved as fossils. All animals probably evolved.

the animals has the organ level of organization. Type of Body Plan Two body plans are present in the animal kingdom: Sac plan: Incomplete digestive system with only one opening. Ex: Jellyfish & planaria Tube-within-a-tube plan: Complete digestive system. Two/children. Hookworm: Once common in the southern United States. Person becomes infected when walking in soil contaminated with human waste Guinea worm: Person becomes infected when drinking water with water fleas contaminated with guinea worm eggs. Worm/


Chapter 41: Animal Nutrition 1.Why do we eat? -Fuel (chemical energy) -To get organic material for biosynthesis (carbon skeletons) -Essential nutrients.

Esophagus Salivary glands Stomach Liver Pancreas Gall- bladder Large intestines Small intestines Rectum Anus Parotid gland Sublingual gland Submandibular gland Salivary glands A schematic diagram of the human digestive system Figure 41.15 The human digestive system Pancreas Chapter 41: Animal Nutrition 1.Why do we eat? 2.What are the 4 main feeding mechanisms of feeding? 3.When our bodies need energy, what is the order/


CIRCULATORY SYSTEM The transport system for your body.

carries food (from your digestive system) and oxygen (from your lungs) to your body’s cells. Your blood carries food (from your digestive system) and oxygen (from your/animations Heart beat animation (15 seconds) Heart beat animation (15 seconds) Heart beat animation (15 seconds Heart beat animation (15 seconds The ‘glass heart’ animation The ‘glass heart’ animation The ‘glass heart’ animation The ‘glass heart’ animation Real footage of a human heart beating – not for the squeamish! Real footage of a human/


Zoology Section 2 Needs of animals Flatworms and round worms Parasites.

SCOLEX EGGS RELEASED FROM PROGLOTTIDS TAPEWORM ATTACHED TO INTESTINAL WALL CYSTS IN MUSCLE OF COW SCOLEX Cow consumes eggs Human consumes cysts Brand new phylum IV. Phylum NEMATODA- “round worms” Examples Ascaris, Trichinella, hookworms Complete digestive system –mouth to anus Free-living Parasites on plants, animals and man (50) 1. HOOKWORM life cycle Hookworms are found in tropical and semitropical regions. Their larva develop/


Evolution of Animals Fossil record of invertebrates is incomplete because soft-bodied animals are poorly preserved as fossils. All animals probably evolved.

the animals has the organ level of organization. Type of Body Plan Two body plans are present in the animal kingdom: Sac plan: Incomplete digestive system with only one opening. Ex: Jellyfish & planaria Tube-within-a-tube plan: Complete digestive system. Two/children. Hookworm: Once common in the southern United States. Person becomes infected when walking in soil contaminated with human waste Guinea worm: Person becomes infected when drinking water with water fleas contaminated with guinea worm eggs. Worm/


Nutrition ANSC 2. Know Understand Do! Know Basic nutritional elements Basic digestive anatomy Feedstuffs in a ration Understand o Role of nutritional.

have? Give a step by step breakdown from beginning to end, following food movement within the animal’s digestive system. Be sure to include what is happening to the food at each section of digestion Share your Researched Animal Share your researched animal How does this compare to the animals we discussed in class? Reading and Analyzing a Feed Label ANSC 2 Objectives Review food label basics/


Chapter: Introduction to Animals Table of Contents Section 3: Flatworms and RoundwormsFlatworms and Roundworms Section 1: Is it an animal? Section 2:

than 550 million years ago, roundworms appeared early in animal evolution. Flatworms and Roundworms 3 3 They were the first group of animals to have a digestive system with a mouth and an anus. Scientists hypothesize that roundworms are more closely related to arthropods than to vertebrates. Importance of Roundworms Some roundworms cause disease in humans. Flatworms and Roundworms 3 3 Others are parasites of/


Kingdom Animalia (Invertebrates). Characteristics of Animals Multicellular Eukaryotic Heterotrophic consumers Most are motile, but some are sessile Most.

the tapeworm eggs Once inside the animal, the eggs become embryos, and then larvae; the larvae encyst in muscle, which is the part eaten by humans When a human eats the infected meat, digestive juices break down the cysts and release/ Respiration occurs through the skin Kidney-like structures that excrete liquid wastes located in each body segment Earthworms (continued) Digestive system is quite advanced; consists of the following structures (in order from anterior to posterior): –Mouth—food (mixed with/


Ch. 41: Animal Nutrition. I.Nutritional Requirements: A.Diet: must satisfy 3 needs for 1. Fuel 2. Raw material for biosynthesis 3. Nutrients for survival.

if glycogen and fats are used up -Body stores fat from food as fat 3.Obesity: a. Most human bodies have limits on weight gain.  Some remain lean no matter what they eat  Some obese /Animal’s cells take up food molecules Undigested material passes out of the digestive system B.Digestion occurs in specialized compartments 1.Intracellular Digestion: Food vacuoles with hydrolytic enzymes break down food; simplest digestive compartment. -Single-celled protists -Sponge cells Ex. Intracellular Digestion/


Ads by Google