BSC 216 EXAM 1 QUESTIONS AND
CORRECT ANSWERS. VERIFIED
2025/2026.
Chemical messengers released by endocrine glands to regulate some functions of other cells are
known as __________.
a. hormones
b. antibodies
c. electrolytes
d. neurotransmitters - ANS a. hormones
What type of hormone can cross the plasma membrane to bind to a receptor in the cytosol or
nucleus?
a. hydrophilic hormones
b. protein hormones
c. amine hormones
d. hydrophobic hormones - ANS a. hydrophilic hormones
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,With which gland does the hypothalamus have a close anatomical and physiological
relationship?
a. adrenal gland
b. pineal gland
c. thyroid gland
d. pituitary gland - ANS d. pituitary gland
What is delivered over the hypothalamic-hypophyseal portal system?
a. releasing and inhibiting hormones
b. trophic hormones
c. tropic hormones
d. stimulating hormones - ANS a. releasing and inhibiting hormones
What is the primary effect of antidiuretic hormone (ADH, or vasopressin)?
a. sodium retention by the kidneys
b. water retention by the kidneys
c. increases urine production by the kidneys
d. blood glucose regulation - ANS b. water retention by the kidneys
What does thyroid-stimulating hormone (TSH) target?
a. posterior pituitary (neurohypophysis)
b. thyroid gland
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,c. hypothalamus
d. anterior pituitary (adenohypophysis) - ANS b. thyroid gland
What hormone is made by the parafollicular cells of the thyroid gland?
a. parathyroid hormone (PTH)
b. thyroxine (T4)
c. calcitonin
d. triiodothyronine (T3) - ANS c. calcitonin
What element is necessary for the production of triiodothyronine (T3) and thyroxine (T4)?
a. iodine
b. calcium
c. magnesium
d. potassium - ANS a. iodine
What is NOT an effect of parathyroid hormone (PTH)?
a. increased absorption of calcium ions by the small intestine
b. increased release of calcium ions from bone
c. increased osteoblast activity
d. increased reabsorption of calcium ions from fluid in the kidneys - ANS c. increased
osteoblast activity
Aldosterone regulates __________.
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, a. blood calcium ion levels
b. blood glucose levels
c. extracellular sodium and potassium ion levels
d. blood iodide ion levels - ANS c. extracellular sodium and potassium ion levels
What is NOT a primary target tissue of cortisol?
a. liver tissue
b. nervous tissue
c. adipose tissue
d. muscle tissue - ANS b. nervous tissue
Which hormone lowers blood glucose levels?
a. cortisol
b. insulin
c. growth hormone
d. glucagon - ANS b. insulin
Harrie has recurring kidney stones. Which hormone should be checked for normal levels?
a. calcitonin
b. thyroxine (T4)
c. parathyroid hormone (PTH)
d. triiodothyronine (T3) - ANS c. parathyroid hormone (PTH)
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
CORRECT ANSWERS. VERIFIED
2025/2026.
Chemical messengers released by endocrine glands to regulate some functions of other cells are
known as __________.
a. hormones
b. antibodies
c. electrolytes
d. neurotransmitters - ANS a. hormones
What type of hormone can cross the plasma membrane to bind to a receptor in the cytosol or
nucleus?
a. hydrophilic hormones
b. protein hormones
c. amine hormones
d. hydrophobic hormones - ANS a. hydrophilic hormones
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,With which gland does the hypothalamus have a close anatomical and physiological
relationship?
a. adrenal gland
b. pineal gland
c. thyroid gland
d. pituitary gland - ANS d. pituitary gland
What is delivered over the hypothalamic-hypophyseal portal system?
a. releasing and inhibiting hormones
b. trophic hormones
c. tropic hormones
d. stimulating hormones - ANS a. releasing and inhibiting hormones
What is the primary effect of antidiuretic hormone (ADH, or vasopressin)?
a. sodium retention by the kidneys
b. water retention by the kidneys
c. increases urine production by the kidneys
d. blood glucose regulation - ANS b. water retention by the kidneys
What does thyroid-stimulating hormone (TSH) target?
a. posterior pituitary (neurohypophysis)
b. thyroid gland
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,c. hypothalamus
d. anterior pituitary (adenohypophysis) - ANS b. thyroid gland
What hormone is made by the parafollicular cells of the thyroid gland?
a. parathyroid hormone (PTH)
b. thyroxine (T4)
c. calcitonin
d. triiodothyronine (T3) - ANS c. calcitonin
What element is necessary for the production of triiodothyronine (T3) and thyroxine (T4)?
a. iodine
b. calcium
c. magnesium
d. potassium - ANS a. iodine
What is NOT an effect of parathyroid hormone (PTH)?
a. increased absorption of calcium ions by the small intestine
b. increased release of calcium ions from bone
c. increased osteoblast activity
d. increased reabsorption of calcium ions from fluid in the kidneys - ANS c. increased
osteoblast activity
Aldosterone regulates __________.
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, a. blood calcium ion levels
b. blood glucose levels
c. extracellular sodium and potassium ion levels
d. blood iodide ion levels - ANS c. extracellular sodium and potassium ion levels
What is NOT a primary target tissue of cortisol?
a. liver tissue
b. nervous tissue
c. adipose tissue
d. muscle tissue - ANS b. nervous tissue
Which hormone lowers blood glucose levels?
a. cortisol
b. insulin
c. growth hormone
d. glucagon - ANS b. insulin
Harrie has recurring kidney stones. Which hormone should be checked for normal levels?
a. calcitonin
b. thyroxine (T4)
c. parathyroid hormone (PTH)
d. triiodothyronine (T3) - ANS c. parathyroid hormone (PTH)
4 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
