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 mechanical and chemical breakdown of food into usable molecules
2. List some other names of the digestive tract. Alimentary canal and GI tract
3. Explain where and how the mechanical breakdown of food occurs. It occurs starting in the mouth with the teeth beginning digestion mechanically by chewing which breaks a part food. You have two sets of teeth the incisors for cutting, canines for tearing, and premolars and molars for grinding.
4. How does food move through the digestive tract? Peristalsis
5. What is released from the gall bladder when food is in the duodenum? Bile
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 |Begins mechanical digestion.|Saliva |Carbs |
| |By chewing and breaking down| | |
|...
