Digestion Study Guide

Digestion Lecture Study Guide

Based on information found in the lecture folder or other sources, answer the following questions.

1. What is digestion? Digestion is the mechanical and chemical breakdown of food into usable molecules

2. List some other names of the digestive tract. Alimentary Canal or GI Tract

3. Explain where and how the mechanical breakdown of food occurs. It begins in the mouth, teeth begin digestion mechanically by chewing, also known as, mastication, which breaks the food apart. There are specific teeth used for specific jobs; incisors for cutting, canines or fangs for tearing, and premolars and molars for grinding the food.

4. How does food move through the digestive tract. By peristalsis, a wavelike motion.

5. What is released from the gall bladder when food is in the duodenum? Cholecystokinin

6. The organs of the digestive tract form a continuous tube from mouth to anus. List the organs of the tract including specific regions of the small and large intestine, from proximal to distal in the blanks…

Mouth -> __pharynx_____________ -> __esophagus_______________ -> ___stomach______________ -> small intestine ->

__Duodenum______________ -> ____jejunum_____________ -> ____ilium_______________ -> large intestine: cecum,

appendix, -> ___ascending colon__________________ -> __transverse colon___________________ -> __descending colon________________ ->

_sigmoidal colon___________________ -> _involuntary sphincter____________________ -> _voluntary sphincter__________________ -> anus

7. Fill in the chart.

|Organ |Function |Secretes |Helps to digest what food |

| | | |type (carb, prot,fat)? |

|Mouth |Chewing and breaking food apart. |Saliva...