For each hormone, say whether it comes from the adrenal medulla or the adrenal cortex…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
For each hormone, say whether it comes from the adrenal medulla or the adrenal cortex.
- Adrenaline.
- Cortisol.
- Aldosterone.
- Noradrenaline.
- The androgens made in small amounts.
- Which of these hormones are catecholamines?
- Which one of them acts on the renal tubules to keep sodium?
Need a reminder? The key ideaShow
The adrenal medulla makes adrenaline and noradrenaline, the hormones of fight or flight, under the control of nerves. The cortex makes glucocorticoids (cortisol), mineralocorticoids (aldosterone) and small amounts of androgens, and ACTH controls the cortex. Addison's disease is a lack of the cortical hormones. Cushing's syndrome is too much cortisol.
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) Medulla.
Step 2. (b) Cortex. It is the main glucocorticoid.
Step 3. (c) Cortex. It is the main mineralocorticoid.
Step 4. (d) Medulla.
Step 5. (e) Cortex.
Step 6. (f) Adrenaline and noradrenaline, the two hormones of the medulla.
Step 7. (g) Aldosterone, which stimulates the reabsorption of Na and water.
Answer: (a) medulla; (b) cortex; (c) cortex; (d) medulla; (e) cortex; (f) adrenaline and noradrenaline; (g) aldosterone.
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