Answer to Question 1
C
Explanation: A) The anterior pituitary secretes melanocyte-stimulating hormone, which regulates skin pigmentation.
B) The pineal gland secretes melatonin, which regulates the release of gonadotropin.
C) Correct. The posterior pituitary secretes antidiuretic hormone, which stimulates the reabsorption of water by the renal tubules.
D) The thyroid gland secretes hormones that play a vital role in metabolism.
Answer to Question 2
FALSE
Explanation: The small intestine absorbs nutrients into the body.