Name the hormone that fits each description…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Name the hormone that fits each description.
- It is made by the wall of the atrium of the heart and dilates the blood vessels.
- It is made by the kidney and stimulates the making of red blood cells.
- It acts on the gastric glands and makes them release HCl and pepsinogen.
- It makes the exocrine pancreas release water and bicarbonate ions.
- It acts on the pancreas and the gall bladder together.
Need a reminder? The key ideaShow
The atrial wall makes ANF, which dilates the blood vessels and lowers the blood pressure. The kidney makes erythropoietin, which stimulates the making of red blood cells. Gastrin acts on the gastric glands (HCl and pepsinogen), secretin on the exocrine pancreas (water and bicarbonate), CCK on the pancreas and gall bladder (enzymes and bile), and GIP inhibits the stomach. Blood pressure is the cardiac output times the resistance.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. (a) ANF, the atrial natriuretic factor. It lowers the blood pressure.
Step 2. (b) Erythropoietin.
Step 3. (c) Gastrin.
Step 4. (d) Secretin.
Step 5. (e) CCK (cholecystokinin). It makes the pancreas release enzymes and the gall bladder release bile.
Answer: (a) ANF; (b) erythropoietin; (c) gastrin; (d) secretin; (e) CCK.
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