Assume that blood pressure drops in a person because of an injury. Indicate which of the following occurs by selecting "true" for does occur or "false" for does not occur.
1. Circulating levels of aldosterone will increase.
2. Circulating levels of renin will decrease.
3. The sympathetic nervous system stimulates the adrenal glands.
4. Water absorption by the distal convoluted tubule will decrease.
5. Circulating levels of angiotensin II will increase.

1) True

2) False

3) True

4) False

5) True

Explanation:

When the blood pressure drops, the renin-angiotensin system activates to help regulate the blood pressure.

The decrease in blood pressure is detected by cells in the kidney and stimulates the secretion of renin, which after many steps (involving the increase in circulation of angiotensinogen, angiotensin I, and angiotensin II), ends up stimulating the secretion of aldosterone in the adrenal gland. The higher levels of aldosterone in circulation will stimulate the absorption of water by the distal convoluted tubule.