Question 1

Which of the following best describes the mechanism by which the hypothalamus communicates with the posterior pituitary?

Accepted Answer

Action potentials travel down axons of hypothalamic neurons, causing hormone release from their axon terminals in the posterior pituitary.

Question 2

Which hormone is released from the posterior pituitary in response to increased blood solute concentration detected by osmoreceptors?

Accepted Answer

Antidiuretic hormone (ADH)

Question 3

A patient presents with intense thirst and excessive urine output following head trauma. Which condition is most likely responsible?

Accepted Answer

Diabetes insipidus

Question 4

Which of the following hormones is NOT a tropic hormone released by the anterior pituitary?

Accepted Answer

Growth hormone (GH)

Question 5

Which hormone is primarily responsible for stimulating milk production in the breasts?

Accepted Answer

Prolactin (PRL)

Question 6

What is the primary effect of growth hormone (GH) on metabolism?

Accepted Answer

It mobilizes fats from adipose tissue and decreases glucose uptake, raising blood glucose levels.

Question 7

Which feedback mechanism is involved in the release of oxytocin during childbirth?

Accepted Answer

Positive feedback

Question 8

Which hormone is released from the anterior pituitary in response to corticotropin-releasing hormone (CRH) from the hypothalamus?

Accepted Answer

Adrenocorticotropic hormone (ACTH)

Question 9

A child with hyposecretion of growth hormone (GH) is most likely to develop which condition?

Accepted Answer

Pituitary dwarfism

Question 10

Which of the following best describes the hypophyseal portal system?

Accepted Answer

A vascular connection consisting of two capillary beds connected by veins.

Question 11

Which hormone stimulates the adrenal cortex to release glucocorticoids?

Accepted Answer

Adrenocorticotropic hormone (ACTH)

Question 12

Which hormone is released in response to gonadotropin-releasing hormone (GnRH) and stimulates gamete production?

Accepted Answer

Follicle-stimulating hormone (FSH)

Question 13

Which hormone is released from the anterior pituitary and triggers ovulation in females?

Accepted Answer

Luteinizing hormone (LH)

Question 14

Which of the following is a consequence of hypersecretion of antidiuretic hormone (ADH)?

Accepted Answer

Syndrome of inappropriate ADH secretion (SIADH)

Question 15

Which hormone is primarily inhibited by dopamine (prolactin-inhibiting hormone, PIH)?

Accepted Answer

Prolactin (PRL)

Question 16

Which hormone acts via a second-messenger system to mobilize calcium during childbirth?

Accepted Answer

Oxytocin

Question 17

Which hormone is released from the anterior pituitary in response to thyrotropin-releasing hormone (TRH)?

Accepted Answer

Thyroid-stimulating hormone (TSH)

Question 18

Which hormone is responsible for the anti-insulin effect, raising blood glucose levels by mobilizing fats and decreasing glucose uptake?

Accepted Answer

Growth hormone (GH)

Question 19

Which hormone is released from the posterior pituitary and causes vasoconstriction during severe blood loss?

Accepted Answer

Antidiuretic hormone (ADH, vasopressin)

Question 20

Which hormone is responsible for stimulating the epiphyseal plate, leading to long bone growth?

Accepted Answer

Growth hormone (GH)

The Hypothalamus and Pituitary Gland: Structure, Function, and Hormonal Regulation

Study Guide - Practice Questions