Danielle crise Chris menchio

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10. PHYLUM CHORDATA Dorsal Notochord-long rod that supports the body-becomes the vertebrae in most. Dorsal Nerve cord-becomes the central nervous system.

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Presentation transcript:

Danielle crise Chris menchio Fish Danielle crise Chris menchio

Internal Diagram

Nervous System

Organs

Three Classes of Fish

Class Agnatha Nickname: Jawless Fish Examples: Lamprey, Hagfish General Traits: Lack paired fins and bones Lack Jaw Attach to prey with disk shaped sucker

Hagfish Traits Bottom dwellers Salt water No jaws Tie themselves into knots- hide from predators

Lamprey Traits Lack jaws Sucker mouth Live in salt and fresh water Feed off body fluids of prey Live in salt and fresh water

Class Chondrichthyes Nickname: Cartilaginous fish Examples: Sharks, Rays, and Skates General Traits: Skeleton made of cartilage Jaws Paired fins Predators Internal fertilization

Shark Traits 6-20 rows of teeth 20,000 teeth in a lifetime Lots of lipids Well-developed sense organs Constantly swim Lack air bladder

Ray Traits Flat bodies Bottom dwellers Long, whip-like tails Live young Diamond shaped bodies

Skates Traits Flat bodies Bottom dwellers Long, whip-like tails Lay eggs Triangular body

Class Osteichthyes Nickname: Bony fish Examples: Trout, bass General Traits: Jaws Bony skeleton Paired fins

Ray Finned Fish Traits Common fish Air bladder Scales- cycloid Camo for protection in water

Lobe Finned Fish Traits Lunged fish: Gills and lungs Shallow ponds Coelacanth fish: Thought to be extinct Lack rays Fleshy skin

Fish Adaptations for Life in Water

External Diagram Dorsal fins Lateral line eye nostril mouth Caudal fin Pectoral fin gill Anal fin Pelvic fin

Adaptations Stream-line body Allows them to move faster through water Muscular tail Rapid movement Paired Fins Move through water Gills Take in O2 release CO2

Gill Structure

Adaptations Continued Dorsal Fin Increases stability Secretes Mucus Reduces friction Lateral Line Detects vibrations

Fins and their functions Caudal: For forward movement of fish Dorsal: Keep fish upright and stable Anal: Keeps fish moving in straight line

Fins and their functions continued Pelvic: Used for stopping and moving up and down Pectoral: Scales: Protection Prevent loss or gain of water

Nervous System Purpose: Brain Spinal cord Nerves Sense organs Eyes Transmit electrical impulses from brain to rest of body Brain Spinal cord Nerves Sense organs Eyes nose

Reproductive System Purpose: Bony fish: Cartilaginous fish: To produce viable sex cells Bony fish: External fertilization Cartilaginous fish: Internal fertilization

Digestive System Passageway Mouth (entrance for food) Pharynx (connects mouth to esophagus) Esophagus ( passageway for food- leads to stomach) Stomach ( starts digestion)

Digestive System Passageway Pyloric ceca ( 2nd part of digestion) Intestine( last part of digestion) Anus ( exit for solid waste)

Additional organs of digestion Liver (Makes Bile) Gall Bladder ( stores bile until needed in intestine) Pancreas ( makes insulin)

Pathway of Blood

Circulatory System Purpose: To deliver oxygen and food Closed circulatory system Low efficiency Clean and dirty blood mixes

Pathway of blood Heart pumps blood through arteries Blood picks up O2 and releases CO2

Pathway of blood 3. Gills to body tissues- nutrients and waste are exchanged 4. Blood goes back to heart through veins 2 chambered heart

Fish Classification Kingdom: Animal Phylum: Chordates Subphylum: Vertebrates Classes: Jawless Fish (Agnatha) Cartilaginous Fish (Chondrichthyes) Bony Fish (Osteichthyes)

Pathway thru Heart Deoxygenated blood returns from body to sinus venosus To large atrium To muscular ventricle To conus/bulbus arteriosus To aorta

Activities http://kr021.k12.sd.us/zoology/fish%20web.htm http://www2.sd35.bc.ca/uconnect/salmon/DissectionGa me.html http://quizlet.com/18408424/flashcards http://quizlet.com/53107996/test http://quizlet.com/53107996/scatter

Videos https://www.youtube.com/watch?v=pNZQEmGp11k https://www.youtube.com/watch?v=37wCrU4psIw https://www.youtube.com/watch?v=5HMp-GXjHtg https://www.youtube.com/watch?v=zRQIXX-IF7Q https://www.youtube.com/watch?v=gz7Ku_HFNko

Works Cited Notes Google images Website Title: Quizlet Article Title: Quizlet Date Accessed: January 05, 2015 Website Title: YouTube Publisher: YouTube Date Accessed: January 07, 2015