Cell Types & Hormones Flashcards Preview

Functional Histology VBMS 408 > Cell Types & Hormones > Flashcards

Flashcards in Cell Types & Hormones Deck (11):
1

Hepatocytes

Lacks a basement membrane facilitates exchange of materials with blood ( Numerous mitochondria, golgi complexes, numerous peroxisomes, glycogen deposits, lipid droplets.)

2

Secretion of bile

1) CCK released from the duodenal cells in response to fatty acids, protein digestive products, and Ca2+ 2) Contraction of smooth muscle in the wall of gall bladder 3) relaxation of the sphincter of oddi of hepatopancreatic ampulla and release of bile into duodenum via the major and minor duodenal papilla

3

Paneth cells

located at the base of the crypts of Lieberkuhn ; eosinophilic granules, secrete antimicrobial substances such as lysozyme.

4

Chief Cells

cells in the stomach that releases pepsinogen and chymosin. Pepsinogen is activated into the digestive enzyme pepsin when it comes in contact with acid produced by gastric parietal cells (fundus)

5

Parietal Cells

secrete hydrochloric acid (HCl) and intrinsic factor. These cells are located in the gastric glands found in the lining of the fundus and in the body of the stomach.

6

Secretin

Secreted by the neuroendocrine cells of the duodenum in response to chyme. stimulates intercalated ducts of the pancreas to produce large quantities of alkaline fluid (pH 8.0) rich in NaHCO3

7

Trypsinogen

Converted to active form, trypsin by enterokinase produced by duodenal mucosa. Digestion of proteins in chyme.

8

Wool hair

fine and crimped. More present young animals

9

Vellus Hair

finer and soft hair. young and women

10

Terminal hair

longer and coarse. Males and pubic regions

11

intrinsic factor

allows stomach to absorb vitamin b12