NHM 101 Lecture Notes - Lecture 4: Common Bile Duct, Duodenum, Ileum

29 views3 pages

For unlimited access to Class Notes, a Class+ subscription is required.

Human Nutrition
Chapter 3
Digestion, Absorption, and Transport
Objectives:
List segments of the digestive tract
Explain mechanical and chemical processes of digestion in order
List the 5 organs and their secretions
Explain how nutrients are routed in their circulatory systems from GI tract
Describe how bacteria influence health and activities of GI tract
Definitions:
Digestion: process by which food is broken down
Absorption: uptake of nutrients by the cells of small intestine for transport into either
the blood or lymph system
Gastrointestinal (GI) tract- digestive tract flexible muscular tube that extends from
mouth to anus
o Lumen: inner space within the GI tract and is continuous from one end to the
other
Anatomy of Digestive Tract
1. Mouth
2. Esophagus
3. Stomach
4. Small intestine
5. Large intestine (colon)
6. Rectum
7. Anus
Mouth
Process of digestion begins in the mouth
Chewing and crushing food pieces
Fluids from food/beverages and from salivary glands blend with food for
easy swallowing
Food is swallowed passes through pharynx epiglottis closes off airway
food enters esophagus as the upper esophageal sphincter opens
Carbohydrate digestion begins here
find more resources at oneclass.com
find more resources at oneclass.com
Unlock document

This preview shows page 1 of the document.
Unlock all 3 pages and 3 million more documents.

Already have an account? Log in

Get access

Grade+
$10 USD/m
Billed $120 USD annually
Homework Help
Class Notes
Textbook Notes
40 Verified Answers
Study Guides
1 Booster Class
Class+
$8 USD/m
Billed $96 USD annually
Homework Help
Class Notes
Textbook Notes
30 Verified Answers
Study Guides
1 Booster Class