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Johnemt
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What are the 4 layers of the GI tract?
- Mucosa
- Submucosa
- Muscularis
- Serosa
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Which layer controls secretory cells and smooth muscles of the mucosal epitheliam?
Submucosa
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Which layer contains glands and lymphatic tissue?
Submucosa
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What is the job of the muscularis?
mixes and propels substances
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What is controlled by the myenteriuc plexus?
muscularis
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what is peristalsis?
wave like contraction of muscles to move food
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what is the retroperitoneal region?
anything in the abdomen
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What is the supberitoneal region?
anything in the pelvic cavity
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what are the 4 types of teeth?
- incisors
- canines
- premolars
- molars
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What do incisors do?
bite
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What do canines do?
tearing and grasping
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What do premolars and molars do?
grinding
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where can you find stratified squamous E.T. in the gi tract?
esophogus and rectum
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what forms the lower esophageal sphincter?
muscularis
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what does the esophagus have instead of serosa?
adventitia
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does the stomach have oblique muscles in the muscularis?
yes
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what else does the liver do besides filter blood?
secretes bile to aid in absorption of lipids bye the small intestine
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what p roduces and secretes bile?
hepatocytes
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What 2 types of glands do the pancreas contain?
exocrine and endocrine glands
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what secretes pancreatic juice?
Pancreatic acini
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what do the pancreatic duct and the common bile duct form as they enter the duodenum?
hepatopancreatic ampulla
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what is the shortest region of the small intestine?
duodenum
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what is the primary site of chemical digestion and absorption?
jejunum
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what is the longest region of the small intestin?
ileum
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what do the intestinal glands secrete?
digestive enzymes
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what do the brunner's gland secrete?
alkaline mucus
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what is segmentation?
localized mixing of chyme in small intestine
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what is haustral?
churning, pouch to pouch movement in large intestine
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