ANSWER THE MONDAY BELLWORK QUESTION Bellwork

Diagrams

and Can I summarize how the different levels of organization are integrated within living systems? Can I explain the basic functions of a major organ system? How do different organ systems enable a complex multicellular organism to survive? Students will be able to analyze how plant and animal cells are organized to carry on the processes of life?

Digestive Demonstration Take a big bite of the cracker and chew on a few minutes. The cracker will taste bland at first, but raise your hand when you start to taste a sweet flavor. Digestion starts in the mouth with enzymes that break down carbohydrates into simple sugar.

The Digestive System The digestive system is a group of organs that work together to digest food so that is can be used by the body. The digestive system is a series of tubelike organs called the digestive tract. The Digestive Tract Organs: Mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, anus The liver, gall bladder, pancreas, and salivary glands are also part of this system, but food does not pass through them.

Digestion Two types of digestion: The breaking, crushing, and mashing of food is called mechanical digestion. In chemical digestion, large molecules are broken down into nutrients.

Steps of Digestion Steps of the Digestion: Mouth Teeth- chewing (mechanical digestion) Saliva- contains an enzyme that begins chemical digestion of carbohydrates; changes complex carbohydrates (starches) into simple sugars (glucose). Esophagus- sends food to stomach Stomach- breaks down food into a liquid (chyme) by the action of muscle contraction (mechanical), enzymes, and acids (chemical). Pancreas- lies behind the stomach and makes digestive enzymes and hormones that regulate sugar levels. Small Intestine- the organ between the stomach and large intestine where most of the break down of food happens (chemical) and most of the nutrients from food are absorbed by villi. Liver- Makes bile to break up fat. Stores nutrients. Breaks down toxins. Gall bladder- stores bile produced by the liver Large intestine- removes water from mostly digested food and turns waste into semisolid feces (poop). Rectum- stores feces until it leaves the anus.

View of the Inside of the Stomach

The inside of a real digestive system! Part One Part Two

BrainPop Digestive System

HBS Chart- Digestion Function: The digestive system breaks down the food you eat into nutrients that your body can absorb. Major Organs: esophagus, stomach, intestines, liver How it works with other systems: The circulatory system absorbs nutrients from the small intestines to carry to the body cells.

HBS Story Make sure you have at least 3 major organs included in your paragraph for each system!