Lecture 24 Flashcards
1
Q
What do reflexes stimulated by receptors stimulate?
A
- Smooth muscle contraction
- Gland secretion
- Nervous and hormonal regulation of GI function
2
Q
What does the parasympathetic nervous system stimulate?
A
Motility and secretion
3
Q
What does the sympathetic nervous system
A
Inhibits motility and secretion
4
Q
Critical hormones in hormonal regulation
A
- Gastrin
- Secretin
- GIP
CCK
5
Q
Peristalsis
A
Force the food through the GI tract. Contraction of smooth muscle behind a lump of food.
6
Q
Segmentation
A
Mixes the food together, not being forced all the way through.
7
Q
Mechanical digestion and mixing occurs in the
A
Antrum
8
Q
Controlled delivery to the duodenum by the
A
Pyloric sphincter
9
Q
What is peristalsis initiated on?
A
The greater curvature and spreads to the antrum
10
Q
Retropulsion is a combination of ____ and closure of the _____ sphincter
A
Peristasis, pyloric
