FNH 250 Study Guide - Midterm Guide: Pylorus, Pancreatic Lipase Family, Gallbladder

81 views4 pages
Published on 7 Jul 2017
School
UBC
Department
Food, Nutrition and Health
Course
FNH 250
Professor
FNH 250 Nutrition Concepts & Controversies
DIGESTION, ABSORPTION & TRANSPORTATION
At the end of the chapter, it is expected that you should be able to:
Sketch a picture of the gastrointestinal tract, label
all the major and accessory organs, and discuss the
primary roles of the organs in nourishing the body.
Major organs
1. Mouth
chewing to increase SA of food
2. Stomach
digestion of food
churning of muscle physically
breaks down food
3. Small intestine
absorbs nutrient
4. Large intestine (colon)
extract/reabsorb water from waste
Accessory organs
1. Liver
produces bile
2. Gall bladder
stores biles
3. Pancreas
secretes pancreatic juices into small intestine (digestive enzymes)
Describe the muscle actions in each major organ of the GI tract that assist in the digestion and
absorption of foods, and the elimination of waste products.
1. Chewing (mouth) mechanical digestion
2. Peristalsis (esophagus, stomach, and intestines) involuntary movements of the longitudinal
(outer) and circular muscles that occur in wavelike contractions to propel food along GI tract
3. Stomach churning (stomach) mixing, churning stomach contents
4. Segmentation (colon, mostly small intestine) contraction of circular (inner) muscles that
surround the intestine; cinching of muscles to break up food within a particular region
5. Sphincter control control movement of food; found at junctions between major organs
Cardiac/lower esophageal sphincter where bolus enters stomach through
Pyloric sphincter where chyme empties into small intestine from stomach
Ileocecal sphincter where remnants of chyme leave the small intestine and enter the
large intestine through
Describe the chemical actions in each major organ of the GI tract that assist in the digestion and
absorption of foods, and the elimination of waste products.
Hormone substance produced in body in response to a specific stimulus which travels in blood to
target organ and elicit a response there
find more resources at oneclass.com
find more resources at oneclass.com
Unlock document

This preview shows page 1 of the document.
Unlock all 4 pages and 3 million more documents.

Already have an account? Log in

Document Summary

At the end of the chapter, it is expected that you should be able to: Sketch a picture of the gastrointestinal tract, label all the major and accessory organs, and discuss the primary roles of the organs in nourishing the body. Chewing to increase sa of food: stomach. Churning of muscle physically breaks down food: small intestine. Secretes pancreatic juices into small intestine (digestive enzymes) Cardiac/lower esophageal sphincter where bolus enters stomach through. Pyloric sphincter where chyme empties into small intestine from stomach. Ileocecal sphincter where remnants of chyme leave the small intestine and enter the large intestine through. Describe the chemical actions in each major organ of the gi tract that assist in the digestion and absorption of foods, and the elimination of waste products. Hormone substance produced in body in response to a specific stimulus which travels in blood to target organ and elicit a response there. Enzyme protein catalyst that accelerates rates of reactions without being consumed.

Get OneClass Grade+

Unlimited access to all notes and study guides.

YearlyMost Popular
75% OFF
$9.98/m
Monthly
$39.98/m
Single doc
$39.98

or

You will be charged $119.76 upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.