UNITS 1+2- ENDOCRINE Flashcards
Which of these statements about hypothalamic-releasing hormones is true?
a. They are secreted into capillaries in the median eminence.
b. They are transported by portal veins to the anterior pituitary.
c. They stimulate the secretion of specific hormones from the anterior pituitary.
d. All of these are true.
d
The hormone primarily responsible for setting the basal
metabolic rate and for promoting the maturation of the brain is
a. cortisol.
b. ACTH.
c. TSH.
d. thyroxine.
d
Which of these statements about the adrenal cortex is true? a. It is not innervated by nerve fibers.
b. It secretes some androgens.
c. The zona glomerulosa secretes aldosterone.
d. The zona fasciculata is stimulated by ACTH.
e. All of these are true.
e
Which of these statements about the hormone insulin is true?
a. It is secreted by alpha cells in the pancreatic islets.
b. It is secreted in response to a rise in blood glucose.
c. It stimulates the production of glycogen and fat.
d. Both a and b are true.
e. Both b and c are true
e
Match the hormone with the primary agent that stimulates its secretion.
5. Epinephrine
6. Thyroxine
7. Corticosteroids
8. ACTH
a. TSH
b. ACTH
c. Growth hormone
d. Sympathetic nerves
e. CRH
- d
- a
- b
- e
Steroid hormones are secreted by
a. the adrenal cortex.
b. the gonads.
c. the thyroid.
d. both a and b.
e. both b and c.
d
The secretion of which of these hormones would be
increased in a person with endemic goiter?
a. TSH
b. Thyroxine
c. Triiodothyronine
d. All of these
a
Which of these hormones uses cAMP as a second messenger?
a. Testosterone
b. Cortisol
c. Insulin
d. Epinephrine
d
Which of these terms best describes the interactions of
insulin and glucagon?
a. Synergistic
b. Permissive
c. Antagonistic
d. Cooperative
c
Which of these correctly describes the role of inositol
triphosphate in hormone action?
a. It activates adenylate cyclase.
b. It stimulates the release of Ca2+ from the endoplasmic reticulum.
c. It activates protein kinase.
d. All of these
b
Which of these hormones may have a primary role in many
circadian rhythms?
a. Estradiol
b. Insulin
c. Adrenocorticotropic hormone
d. Melatonin
d
Human chorionic gonadotropin (hCG) is secreted by a. the anterior pituitary.
b. the posterior pituitary.
c. the placenta.
d. the thymus.
e. the pineal gland
c
What do insulin-like growth factors, neurotrophins, nitric
oxide, and lymphokines have in common?
a. They are hormones.
b. They are autocrine or paracrine regulators.
c. They are neurotransmitters.
d. They all use cAMP as a second messenger.
e. They all use Ca2+ as a second messenger.
b
