Peritoneum
serous membrane of abdominal cavity
Peritoneal cavity
potential space with serous fluid
Mesenteries
double layer of peritoneum. Provides vascular and nerve supplies to viscera. Hold organs in place
intraperitoneal organs
organs surrounded by visceral peritoneum. Most of the GI tract
Retroperitoneal organs
Organs against posterior abdominal wall. Pancreas, duodenum, ascending and descending colon, rectum, kidneys
Mucosa
Mucus secretion, absorption of end products, protection against infectious disease
Submucosa
Provides structure, blood supply, lymphatic drainage and central control
Muscularis
two layers of smooth muscle responsible for mixing and movement
serosa/adventitia
intra organs have a serosa and retro have both
GI tract path
mouth - esophagus - stomach - small intestines - large intestines - anus
Epithelium of the mouth
stratified squamous epith
What parts of the mouth are keratinized
gums, hard palate and dorsum of the tonuge
Labial frenulum
median folds that join each lip to gums
Vestibule
between lips/cheeks and teeth/gums
Hard palate
assists tongue in mechanical digestion
Soft palate
closes off nasopharynx when swallowing
tongue secured to mouth floor by
lingual frenulum
Tongue functions
grips and repositions food, mixes food with saliva to form bolus, speech
Filliform papillae
give tongue roughness, keratinized and do not contain taste buds
Saliva functions
Cleanses mouth, moistens and dissolves food chemicals, contains amylase enzyme for starch breakdown, antibacterial enzymes