7 Digestion

2120 Words Nov 22nd, 2012 9 Pages
Week 7 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 (GI Tract)

3. Explain where and how the mechanical breakdown of food occurs.

Teeth begin digestion mechanically, Chewing (“mastication”) breaks apart food, 2 sets of teeth, and the teeth are, Incisors for cutting, Canines “fangs” for tearing, and Premolars and molars for grinding

4. How does food move through the digestive tract?

Movement through the tube which is by wavelike motion called
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Cells in the | | |
| |lining of the stomach | | |
| |secrete strong acid and | | |
| |powerful enzymes that are | | |
| |responsible for the | | |
| |breakdown process. When the | | |
| |contents of the stomach are | | |
| |sufficiently processed, they| | |
| |are released into the small | | |
| |intestine. | | |
|Pancreas |first segment of the small |secretes pancreatic juice |protein, fats, and |

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