Principle of GIT and control

Slow waves cause muscle contraction

• True

• False

What cause tonic contraction to happen?

• Continuous repetitive spike potentials

• Hormones

• Continuous entry of calcium ions

• Continuous entry of potassium ions

Myenteric plexus / auerbach’s plexus function is

• To control GI movements

• For absorption

• To control sphincter relaxation

• To control local blood flow

Submucosal plexus / meissner’s plexus function is to control GI secretion

• True

• False

Enteric nervous system cannot operate autonomously without input from extrinsic nerves

• True

• False

Acetylcholine will inhibits GI

• True

• False

Digestive products of fats will stimulate I cells to release CCK

• True

• False

Secretin from S cells will increase H+ secretion

• True

• False

Motilin is secreted during fasting

• True

• False

Functions of CCK

• Stimulate contraction of gallbladder to release bile

• Increase pancreatic enzyme secretion

• Increase HCO3- secretion

• Cause rapid stomach emptying