L24 Flashcards
Why is the series components of the splanchic circulation important?
The series components of the splanchic circulation is composed of the portal vein.
Due to this, ALL venous blood from the gut must be delivered to the liver before entering the general systemic circulation.
This helps ensures that no toxins spread through the body, via the blood
Which receptor subtype is located on the smooth muscles of resistance vessels of the splanchinic circulation
Nn receptors
What are gastrin, secretin, CCK, and motilin and where are they released from?
Hormones
- Released from mucosal endocrine cells into the blood
True or False: Somatostatin and Histamine are neurocrines
False - they are paracrines release by mucosal endocrine cells
Which of the following:
a) stimulates secretion of HCl, IF, and Histamine
b) increases intestinal motility
c) participates in gastro-colonic reflex
A. CCK
B. Gastrin
C. Histamine
D. Secretin
B. Gastrin
Somatostatin inhibits secretion of which four molecules?
Gastrin
Histamine
HCl
IF
____stimulates secretion of HCl and IF, but inhibits SS secretion
Histamine
___ is associated with the phasic contractions of the migrating motility complex
Motilin
Which molecule strongly stimulates pancreatic and hepatic HCO3 secretion and weakly stimulates pancreatic enzyme secretion?
Also: inhibits HCl
Secretin