Question

question 6/10
a person exercises vigorously in the sun and sweats profusely. how would the persons kidneys respond to regulate water?

a. by contracting muscle cells in the skin.

b. by relaxing muscle cells in the skin.

c. by decreasing the amount of water to be excreted.

d. by increasing the amount of water to be excreted.

Explanation:

When a person sweats profusely (loses water), the kidneys work to conserve water. Contracting/relaxing skin muscle cells (A, B) relate to thermoregulation (like goosebumps or blood vessel control), not kidney water regulation. To maintain water balance, kidneys decrease water excretion (C) rather than increase it (D) when water is lost via sweat.

Answer:

C. By decreasing the amount of water to be excreted.