NSG 530 - Advanced Pathophysiology
Exam 3
Question:
the stomach is impermeable to what?
Answer:
water, but can absorb alcohol and aspirin as they are lipid soluble.
Question:
blood to stomach is supplied by _____?
Answer:
celiac artery- abundant!
Question:
Three phases of gastric secretion
Answer:
- cephalic phase
- gastric phase
- intestinal phase 1 / 4
Question:
Motilin
Answer:
increases peristalsis
Question:
Secretin
Answer:
decreases peristalsis
Question:
Gastric mixing and emptying
Answer:
- Retropulsion
- Rate dependent on volume, osmotic pressure, and chemical composition
Question:
Stimulation of gastric secretion
Answer:
-Eating -Gastrin 2 / 4
-Paracrine pathways -Acetylcholine -Chemicals --Ethanol, coffee, protein
Question:
intrinsic factor
Answer:
makes the absorption of vitamin B12 happen
Question:
gastroferritin
Answer:
binds Fe2+ and transports it to small intestine
Question:
phases of gastric secretion
Answer:
- cephalic phase
- gastric phase
- intestinal phase 3 / 4
Question:
Gastric juices include
Answer:
- Pepsin, an enzyme that digests protein
- Other Enzymes
- Hydrochloric Acid
- Mucus
- Salts
- Water
Question:
acid plays what role in gastric secretion?
Answer:
dissolves food fibers, act as bactericide, convert pepsinogen to pepsin
Question:
Pepsin
Answer:
Enzyme that breaks down proteins in the stomach secreted by chief cells
- / 4