Structure that suspends the small intestine from the posterior body wall
Mesentery
Fingerlike extensions of the intestinal mucosa that increase the surface area for absorption
villi
large collections of lymphoid tissue found in the submucosa of the small intestine
peyer's patches
deep folds of the mucosa and submucosa that extend completely or partially around the circumference of the small intestine
circular folds
regions that break down foodstuffs mechanically
oral cavity, stomach
mobile organ that manipulates food in the mouth and initiates swallowing
tongue
conduit for both air and food
pharynx
three structures continuous with and representing modifications of the peritoneum
greater omentum, ileoceal valve, lesser omentum
the gullet; no digestive/absorptive function
esophagus
folds of the gastic mucosa
rugae
sacculations of the large intestine
haustra
projections of the plasma membrane of a mucosal epithelial cell
microvilli
valve at the junction of the small and large intestines
ileoceal valve
primary region of food and water absorption
small intestine
membrane securing the tongue to the floor of the mouth
frenulum
absorbs water and forms feces
large intestine
area between the teeth and lips/cheeks
vestibule
wormlike sac that outpockets from the cecum
appendix
initiates protein digestion
stomach
structure attached to the lesser curvature of the stomach
lesser omentum
organ distal to the stomach
small intestine
valve controlling food movement from the stomach into the duodenum
pyloric valve
posterosuperior boundary of the oral cavity
soft palate
location of the hepatopancreatic sphincter through which pancreatic secretions and bile pass
small intestine
serous lining of the abdominal cavity wall
parietal peritoneum
principal site for the synthesis of vitamin K by microorganisms
large intestine
region containing two sphincters through which feces are expelled from the body
anus
bone supported anterosuperior boundary of the oral cavity
hard palate
differentiate between the colon and the large intestine
The Large Intestine extends from the Ileoceal valve to anus but the colon is part of the large intestine and is divided into ascending, descending, and sigmoid colon
How is the muscularis externa of the stomach modified? How does this modification relate to the function of the stomach?
1. It has a 3rd oblique muscle layer
2. vigorous churning occurs here
the tubelike digestive system canal that extends from mouth to the anus is known as the _____ canal or ____ tract
1. alimentary
2. digestive (GI) tract
Name the subdivision and functions of:
Serosa or adventitia
Sub: None
Function: Protection, anchoring, reduce friction
Name the subdivision and functions of:
Muscularis Externa
Sub: circular, longitudinal layers
Fun: churning, mixing
Name the subdivisions and functions of:
submucosa
Sub: None
Fun: protection
Name the subdivisions and functions of:
Mucosa
Sub: epithelium, lamina propria, muscularis mucosa
Fun: absorption, secretion