A) activate genes and stimulate protein synthesis
B) activate a second messenger
C) activate cyclic AMP
D) stimulate release of calcium ions
2. Which hormones help maintain a relatively constant calcium concentration in the blood?
A) aldosterone and calcitonin
B) parathyroid hormone (PTH) and calcitonin
C) parathyroid hormone (PTH) and cortisol
D) antidiuretic hormone (ADH) and parathyroid hormone (PTH)
3. Which of these occurs when blood glucose concentration falls below the normal range?
A) The pancreas secretes insulin.
B) The pancreas secretes glucagon.
C) The adrenal gland secretes aldosterone.
D) The thyroid gland secretes thyroxine.
4. How does the hypothalamus regulate the release of hormones from the anterior pituitary gland?
A) It secretes releasing and inhibiting hormones that travel through the blood to the anterior pituitary gland.
B) It sends nerve impulses along axons that release hormones within the anterior pituitary gland.
C) It releases Na+ to trigger hormone release by the anterior pituitary cells.
D) It sends nerve impulses to the glandular cells of the anterior pituitary.
5. What hormone stimulates the kidneys to reabsorb water as urine is being formed?
A) antidiuretic hormone (ADH)
B) oxytocin
C) parathyroid hormone (PTH)
D) mineralocorticoids
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