Class notes
Alimentary Canal
- Course
- Nutrition (DENT3030)
Purpose of digestive system Physiology of the GI Tract
[Show more]
Seller
Follow
Content preview
🥘Alimentary Canal - Week 3
Purpose of digestive system
ingest food
digest or break down complex molecules into simple, soluble materials
that can be absorbed
eliminate unused residues
Only energy-providing macronutrients must be digested for absorption
Most vitamins, minerals, alcohol & water can be absorbed as eaten
Why do DH needs to be familiar with normal GI processes?
disturbances in the GI tract may affect:
Nutritional status
Overall health
Oral health
Alimentary Canal - Week 3 1
, Physiology of the GI Tract
Digestive system = alimentary canal + several accessory organs
Alimentary canal
tubular structure
30 feet long
extends from mouth to anus
comprises all body parts through which food passes
Components of Alimentary Tract
oral cavity
esophagus
Alimentary Canal - Week 3 2
, stomach
Small intestine
Duodenum
Jejunum
Illium
large intestine
cecum
colon
rectum
acessory organs:
salivary glands
Liver
Gall bladder
Pancreas
Purpose of valves or sphincters
retain food in each segment until completion of the mechanical actions
& digestive juices
Allow measured amounts of foods to pass into the next segment
Prevent food from "backing up" into the preceding area.
Digestion of food
Alimentary Canal - Week 3 3
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller dungtrn. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$10.43. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77973 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now