BIO 202 EXAM 1- ENDOCRINE SYSTEM COMPLETE QUESTIONS AND ANSWERS 2025-2026
LATEST UPDATE
1. Which of the following pairs of hormones are antagonistic to each other? c) PTH-
calcitonin
2. The major stimulus for secretion of hormones which come from the anterior pituitary is b)
hormonal
3. The target cells for gonadotropin-releasing hormone (i.e., the cells which respond to GnRH)
are located in the: b) anterior pituitary
4. CRH (corticotropin releasing hormone) is secreted from cells of the______ and its effect is to
directly____ secretion of _____ b) hypothalamus, increase, ACTH
5. Which of the following would not be classified as a neurohormone? a) thyrotropin
releasing hormone
b) antidiuretic hormone
c) GHIH
d) oxytocin
e) all of these answers are neurohormones
ANSWER: e
, 6. Which if the following is correct regarding the hypothalamo-hypophyseal portal system?
b) it allows releasing and inhibiting hormones to reach the pituitary
7. Which of the following endocrine glands is/are regulated (either directly or indirectly) by a
hormone secreted by the hypothalamus a) adrenal cortex
b) thyroid follicle cells
c) anterior pituitary
d) interstitial cells of the testis
e) all of these
ANSWER: e
8. Which of following is not a direct effect of PTH (parathyroid hormone) itself? a)
reabsorption of filtered calcium from kidney tubule to bloodstream
b) bone resorption (osteolysis)
c) synthesis of the active form of vitamin D
d) absorption of calcium in digestive tract
e) increased osteoclast activity in bone
ANSWER: d
9. If there is a(n)_____ in the osmotic pressure of blood, ADH will be released. ADH will then
_____ water reabsorption in the kidney to return blood's osmotic pressure to normal levels.
a) increase, increase
LATEST UPDATE
1. Which of the following pairs of hormones are antagonistic to each other? c) PTH-
calcitonin
2. The major stimulus for secretion of hormones which come from the anterior pituitary is b)
hormonal
3. The target cells for gonadotropin-releasing hormone (i.e., the cells which respond to GnRH)
are located in the: b) anterior pituitary
4. CRH (corticotropin releasing hormone) is secreted from cells of the______ and its effect is to
directly____ secretion of _____ b) hypothalamus, increase, ACTH
5. Which of the following would not be classified as a neurohormone? a) thyrotropin
releasing hormone
b) antidiuretic hormone
c) GHIH
d) oxytocin
e) all of these answers are neurohormones
ANSWER: e
, 6. Which if the following is correct regarding the hypothalamo-hypophyseal portal system?
b) it allows releasing and inhibiting hormones to reach the pituitary
7. Which of the following endocrine glands is/are regulated (either directly or indirectly) by a
hormone secreted by the hypothalamus a) adrenal cortex
b) thyroid follicle cells
c) anterior pituitary
d) interstitial cells of the testis
e) all of these
ANSWER: e
8. Which of following is not a direct effect of PTH (parathyroid hormone) itself? a)
reabsorption of filtered calcium from kidney tubule to bloodstream
b) bone resorption (osteolysis)
c) synthesis of the active form of vitamin D
d) absorption of calcium in digestive tract
e) increased osteoclast activity in bone
ANSWER: d
9. If there is a(n)_____ in the osmotic pressure of blood, ADH will be released. ADH will then
_____ water reabsorption in the kidney to return blood's osmotic pressure to normal levels.
a) increase, increase
