Gastrointestinal Hormones, Enzymes, and Secretions: Key Concepts for Biology and Physiology

Action of this hormone is to inhibit HCL and gastric mobility

GIP

This enzyme is low and not inducible in pigs from birth to 3 weeks of age

Amylase

Action of this hormone is to inhibit the other GIT hormones

Somatostatin

Action of this hormone is to secrete water and bicarbonate

Secretin

Action of this hormone is to stimulate gastric motility during fasting

Motilin

This enzyme is induced for ruminants that are 3-8 weeks of age

Lactase

Action of this hormone is to stimulate secretion of HCL and Pepsin

Gastrin

Action of this hormone is to empty gall bladder, inhibit HCL, stimulate synthesis of pancreatic enzymes, regulate glucose, produce satiety, and delay gastric emptying

CCK

Pancreatic lipase preferentially hydrolyzes fatty acids in the 1 and 2 position of triglycerides (true or false)

false

______ is the secretion that assists with fat digestion.

bile

Choose the option that causes the MOST stimulation of Gastrin

Dietary proteins

______ secrete pepsinogen and ________ secrete HCL.

Chief cells, parietal cells

List the four roles of GIT secretions AND an example of each

- Protect and lubricate through- mucous and saliva

- Make acid and bile to help aid in digestion- bile

- digest food through- enzymes

- create things that alter ph of stomach- HCl

______ are substances that acts as a catalyst to bring about a specific reaction.

enzyme

Cholecystokinin is also known as ____________

pancreozymin

Example of a cavital glycosidase

Pancreatic amylase

Example of an intestinal peptidase

Dipeptidase

Example of an intestinal glycosidase

Mannase

Example of cavital peptidase

Gastric pepsin

The zymogen for Trypsin is _________ and it is activated by the enzyme __________

trypsinogen, enterokinase