What do you know about the digestive system? Thursday April 20, 2017 Day 1 1. Please have these Items on your desk. Agenda Science Starter Sheet What do you know about the digestive system? Why do you think we are studying the digestive system?
Today… You will be taking notes on a lined piece of notebook paper. You will turning this in for a grade, so take your time. Write neatly and big enough font for everyone to read.
The Digestive System
The Digestive System Definition: Changes food you eat into nutrients that your cells can use. Alimentary Canal: The complete digestive system (mouth to rectum). Digestion: Food is chemically changed so that it can be absorbed into the bloodstream.
Parts of the Digestive System Teeth: Grinds your food. Salivary Glands: Produce the saliva in your mouth. Tongue: Helps to push food into your esophagus.
Parts of the Digestive System Esophagus: The tube that carries food from the mouth to the stomach. Epiglottis: The flap of skin that covers the trachea Uvula: Covers the nasal passage
Peristalsis Waves
Parts of the Digestive System Stomach: Stores all the food. (warehouse for food) Sphincter muscles: The muscles found at each end of the stomach. Chyme: Liquid lumpy material that is made by the stomach.
How food moves through the Digestive System !! Peristalsis Waves: A ring of muscle that moves food through the digestive system. Absorption: The process where digested food gets into the blood stream
Absorption in the Small Intestine Villi: Tiny projections on the inner walls of the small intestine where absorption takes place.
Parts of the Digestive System Duodenum: The tube that runs from the stomach to the small intestine. Small Intestine: Where digestion first takes place.
Parts of the Digestive System Colon Large Intestine: Three Parts: Ascending Colon Traverse Colon Descending Colon Appendix: Attached to the beginning of the Ascending Colon
Other Parts of the Digestive System Liver: Makes bile and sends it to the gall bladder. Bile: A substance produced by the liver and stored in the gall bladder. Gall Bladder: Receives bile from the liver and stores the bile
Other Parts of the Digestive System Pancreas: Breaks down sugars and starches.