1What are the 2 primary division of the digestive system?
1. Alimentary canal
2. accessory organs - teeth, tongue, glands, liver, gallbladder, pancreas
2What are the 5 functions of the digestive system?
Ingestion
propulsion
digestion
absorption
defacation
3What are the 2 forms of purpolsion in digestive system?
swallowing
peristalsis
4Whatis the peritoneal membrane?
it supports organs
supports naval
most are 2 layers
5What are the 5 parts of the mesenatry ?
VENTRAL - falciform ligament
DORSAL - lesser omentum, greater omentum, transverse mesocyclone, mesenatry proper
6What is retroperitoneal ?
When the organ is not completely wrapped within the peritoneal membrane.
7What are the 4 basic layers of the alimentary canal?
Mucosa
Submucosa
Muscularis
Serosa
8What is epithelium type of the mucosa and what is its functions?
A. nonkeratinized - found in mouth, pharynx, esophagus, anal canal
=provides protection
B. simple columnar found in stomach and intestine
= absorption and secretion
9In mucosa there are 3 laters, if epithelium is one what are the other 2? and their functions?
1. lamina propria - contains MALT, lymphocytes, macrophages
= defends against bacteria
2.. Musculairs mucosa -
=contracts causing folds in mucosa
10What is the Submucosa layer of the alimentary canal?
Binds mucosa to muscularis
Contains meisners plexus
contrails secretory cells of GI tracts
11What is Meitner plexus?
What regulates movement of mucosa and vasoconstriction of blood vessels
12What is the muscularis layer of the alimentary canal?
=voluntary movement of swallowing
contains Auberbachs plexus
13What is the function fo the Auerbachs plexus?
Controls motility of GI tract
14What is the serosa layer of alimentary canal?
Viceral layer of peritneum
inferior to diagram
exceptions = esophagus adventitia