Question

A person stranded in the desert faces the risk of severe dehydration. Which of the following will be maximally stimulated to prevent water loss?

• A. Anterior and posterior pituitary
• B. Adrenal cortex and thyroid gland
• C. Hypothalamus and adrenal gland
• D. Adrenal gland and anterior pituitary

Answer 1

The correct option is A Anterior and posterior pituitary

An interaction between the pituitary gland and the kidneys provides another mechanism. When the body is low in water, the pituitary gland secretes vasopressin (also called antidiuretic hormone) into the bloodstream. Vasopressin stimulates the kidneys to conserve water and excrete less urine.

Hence, the correct answer is (A)