BIOL234 Enteric nervous system

What is the main impact of sympathetic division activity on the GIT?

• Mainly stimulatory

• Mainly inhibitory

Intestinal motility is mainly controlled through?

• the nervous system

• the hormonal system

• a balance of nervous and hormonal

• the somatic system

Which of the two ENS plexi innervate from the upper oesophageal sphincter to the anus?

• Myenteric plexus

• Submucosal plexis

The longitudinal and circular smooth muscle layers of the muscularis is exclusively under myenteric control

• True

• False

IPANS are what?

• Indexed peripheral autonomic neurons

• Intrinsic primary afferent neurons

• Intrinsic peripheral afferent neurons

• Indexed primary autonomic neurons

Which of the following could trigger an IPAN?

• Mucosal disortion

• Distension of the intestine

• Chemical stimuli

• All of these choices

EPANs relay information from the ENS to the CNS, such as fullness, pain, etc.

• True

• False

Which enterhormone is released by I cells as a response to detection of monoglycerides and fatty acids in the SI?

• Gastrin

• Cholocytokinin

• Secretin

• Gastric inhibitory peptide

Gastric inhibitory peptide promotes which of the following in response to detection of glucose in the small intestine?

• Secretion of HCl

• Insulin release

• Stimulation of parietal cells

• Inhibition of K cells

Secretin is released by S cells in the duodenum in response to which stimuli?

• Increased lipids

• Increased protein

• Increased pH

• Increased acid