Download Digestive System Study Guide

Digestive System Study Guide
Not an extensive list, refer to your notes taken in class for more detail.
Importance of Digestion
* 4 components of digestion
* pH and temperature and enzyme function
* advantages of food moving in a single direction along the alimentary canal and compare organisms that have
alimentary canals with those that use simpler forms of digestion (ie – amoeba and hydra)
Ingestion
* parts of the digestive system (organs and alimentary canal)
* function of saliva
* function / structure of teeth (4 types)
* function of peristalsis (where does it occur?)
The Stomach and Digestion
* components of gastric fluid; where are they produced; what is their function
* sphincters that control movement into and out of the stomach
* what is reflux & what is an ulcer (causes / diagnosis / treatment)
* structure of the stomach (4 major layers) and their functions
* function of gastrin in digestion
The Small Intestine and Pancreas
* 3 parts of the small intestine and their function
* explanation of digestion that occurs in the small intestine – where are enzymes produced? What type of
molecule do they digest? What is the result?
* what initiates the release pancreatic fluid?
* does the digestion of food change depending on the meal eaten or does the same process happen each
time?
* the function of secretin and CCK in digestion
The Liver and Gall Bladder
* function of the gall bladder
* what’s in the bile? What is its purpose?
* how does the gall bladder know when to secrete the bile?
Absorption of Materials
* where does water, vitamin, mineral and salt absorption take place?
* where and how are carbohydrates, proteins and fats absorbed
* what are the functions of the large intestine?
* what are villi and microvilli? what are their functions?
* why do we need cellulose in our diet? how does it ensure regularity?
* Describe the process of egestion
Know the pathway that a piece of food will follow as it moves through the digestive tract, including all the chemicals that
are involved in the digestion of all types of nutrients.
Chapter 6 Review Questions: pages 238 to 239 # 1 to 11, 16, 17, 19