Digestive system

Gastrin

Found in G cells of stomach, stimulate glands to secrete, pepsinogen, and HCL

Cholecystokinin

A hormone produced by the small intestine that stimulates gallbladder contraction and release of digestive enzymes from the pancreas.

Secretin

Found an S cells of duodenum, regulates pH by inhibiting gastric acid and stimulating bicarbonate production from pancreas

Insulin

A hormone found in the beta cells in the pancreas that regulates blood glucose levels by facilitating the uptake of glucose into cells. Liver stores glucose as glycogen.

Glucagon

Hormone found in alpha cells of pancreas that raises blood glucose levels by stimulating the liver to break down the stored glycogen into glucose which is then released into bloodstream

Two components of chemical, digestion in stomach

Hydrochloric acid and pepsin

PepsiN

is an enzyme that breaks down proteins in the stomach into smaller peptides,

Two sphincters of stomach

the lower esophageal sphincter and the pyloric sphincter.

Primary purpose of small intestine

is to absorb nutrients and minerals from food.

Three parts of small intestine

are the duodenum, jejunum, and ileum.

Purpose of duodenum

First section, most chemical digestion occurs. Receives enzymes from the pancreas and bile from the liver to breakdown fat protein’s carbs. Also minerals.

Purpose of jejunum.

Absorption of the resulting small nutrients into the bloodstream

Purpose of Ileum

Absorption of vitamin B12 and bile salts into the bloodstream.

Primary purpose of large intestine

Absorption of water, stores feces

Ascending colon

Absorbs, water and salts

Transverse colon

Transports stool, continuous absorption

Descending colon

Carry a solid waste towards the rectum