Stomach Flashcards
What begins at the stomach
Chemical digestion
What is chyme
The creamy paste that food is converted to
What allows the expansion of the stomach
Rugae which is large longitudinal folds on the mucosal surface of the stomach
Walls of the stomach contain how many layers of smooth muscle, name each of those layers
3 layers; longitudinal, circular and oblique
What joins the stomach and where does it join
Small intestine joins the stomach at the pyloric sphincter
What does the pyloric sphincter control
Emptying of stomach contents into the small intestine
Within the stomach epithelium, millions of deep gastric pits lead down into what
Gastric glands
Name the 3 cell types the gastric glands contain
Parietal, Chief and Enteroendocrine
What do parietal cells secrete
A digestive aid, HCl
What do chief cells produce
Pepsinogen
What is the role of pepsinogen
Converted into active pepsin when it is in the presence of HCL.
What is pepsin
Enzyme which digests protein
What do enteroendocrine cells release
Gastrin and other hormones
What does gastrin stimulate
Stimulates parietal cells to secrete HCl
Stomach epithelial cells produce a substance called ….. factor
Intrinsic
