Question

the pineal gland secretes ______ to regulate the bodys circadian rhythms.
calcitonin
melatonin
oxytocin
prolactin
question 2 (2.5 points)
neural pathways of the hypothalamus manufacture ______.
tsh
adh
fsh
gh

Explanation:

Question 1

The pineal gland's main function related to circadian rhythms is secreting melatonin. Calcitonin is from the thyroid, oxytocin from the posterior pituitary, and prolactin from the anterior pituitary.

The hypothalamus's neural pathways produce ADH (antidiuretic hormone, also called vasopressin) which is stored and released by the posterior pituitary. TSH, FSH, and GH are produced by the anterior pituitary (regulated by hypothalamic releasing hormones, but not manufactured in hypothalamic neural pathways).

Answer:

B. melatonin

Question 2