Chapter 24 Flashcards
What is the alimentary canal
another name for the digestive tract
What are salivary Iga’s
antibodies produced in the mouth that protect against microbial pathogens
How many teeth does an adult typically have
32
how many teeth does a child usually have
20
which salyzia gland produces 70% of total saliva
Submandibular gland
which saliva gland produces 25% of saliva
Parotid gland
which saliva gland only produces 5 % of total saliva
sublingual gland
what are the four layers of the gi tract starting from deepest to superficial
Mucosa
submucosa
muscular
serosa
What are the three layers of the mucosa
Inner epithelial lining
lamina propria
muscularis mucosa
what are the two layers of the muscularis and which one is on the inside
circular and longitudinal muscle layers with the circular muscle on the inside of the longitudinal
what are the two layers of the serosa
inner epithelial lining
outer layer of connective tissue
which part of the peritoneum attaches the stomach to the liver
lesser omentum
what part of the peritoneum wraps around the small intestine and attaches it to the dorsal body wall
mesentery proper
what part of the peritoneum attaches the large intestine to the body wall
mesocolon
which layer of smooth muscle is only found in the stomach
oblique muscle layer
what is food called when it leaves the stomach
Chyme
which cells in the stomach produce gastric lipase and pepsinogen
Chief cells
which cells in the stomach produce gastric lipase and pepsinogen
chief cells
which cell in the stomach produces HCL and intrinsic factor
parietal cells
What does gastrin do
increases stomach motility and stimulates gastric acid and enzyme production
what stimulates the release of gastrin
when food arrives in the stomach and when cells of the duodenum are exposed to large quantities of incompletely digested proteins
what secretes gastrin
g cells in the pyloric antrum and cells in the duodenum
what does secretin do
it increases the production of buffer by the pancreas which raises pH of food
decreases gastric motility and secretions
what stimulates the release of secretin
when chyme arrives in the duodenum