Unit 7 Study Guide Anatomy

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?

The process of breaking down food by mechanical and enzymatic action in the alimentary canal into substances that can be used by the body.

2. List some other names of the digestive tract.

Another name for the digestive tract is the gastrointestinal tract.

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

Teeth begin digestion mechanically, chewing breaks apart food. There are two sets of teeth, incisors for cutting and canines for tearing, and premolars and molars for grinding.

4. How does food move through the digestive tract.

In a wave-like movement, called peristalsis, muscles propel food and liquid along the digestive tract.

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

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

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 |Teeth begin digestion |Secretes saliva |Carbs |

| |mechanically | |...