Hormones of the Duodenum pg. 915

CCK

in the pancreas ________ accelerates the production and secretion of all types of digestive enzymes.

cck

increase the secretion of pancreatic enzymes and pushes pancreatic secretion and bile into the duodenum.

Secretin

Among its secondary effects ________ reduces gastric motility and secretory rates.

Gastric Inhibitory Peptide

Has several secondary effects, including stimulating duodenal gland activity, stimulating lipid synthesis in adipose tissue, and increasing glucose used by skeletal muscles.

Gastrin

Hormone produced by the stomach.

Gastrin

The functions of ____________include promoting increased stomach mobility and stimulating the production of gastric acids and enzymes.

cck

causes relaxation of the hepatopancreatic sphincter and contractions of the gallbladder, resulting in the ejection of bile and pancreatic juice into the duodenum.

Secretin

is released when chyme arrives in the duodenum.

Enterocrinin

is released when chyme enters the duodenum. It stimulates mucin production by the submucosal gland

Cholecystokinin (cck)

is secreted when chyme arrives in the duodenum, especially when the chyme contains lipids and partially digested proteins.

Secretin

primary effect is an increase in the secretion of bile (by the liver) and buffers (by the pancreas.) which in turn increases pH of chyme.

Gastrin

secreted by G cells in the duodenum when they are exposed to large quantities of incompletely digested proteins.

Gastric Inhibitory Peptide

secreted when fats and carbohydrates especially glucose- enter the small intestine. The inhibition of gastric activity is accompanied by the stimulation of insulin released at the pancreatic islets.

Vasoactive Intestinal Peptide

stimulates secretion of intestinal glands, dilates regional capillaries, and inhibits acid production in the stomach. By dilating capillaries in active areas of the intestinal tract VIP provides an efficient mechanism for removing absorbed nutrients.

CCk

the presence of ____ in high concentrations has two additional effects: it inhibits gastric activity, and it appears to have CNS effects that reduce the sensation of hunger.

Duodenum

the segment closest to the stomach. This portion of the small intestine is a " mixing bowl." It receives chyme from the stomach and digestive secretions from the pancreas and liver.