Question 1

Which of the following best describes the difference between endocrine and exocrine glands?

Accepted Answer

Endocrine glands secrete hormones into the bloodstream, while exocrine glands secrete products onto body surfaces or into cavities.

Question 2

A patient presents with symptoms of hyperthyroidism. Which hormone is most likely elevated?

Accepted Answer

Thyroxine ($$T_4) $$and Triiodothyronine ($$T_3)$$

Question 3

Which hormone is released by the posterior pituitary and is responsible for regulating water balance in the body?

Accepted Answer

Antidiuretic hormone (ADH)

Question 4

A patient with low blood calcium levels is likely to have increased secretion of which hormone?

Accepted Answer

Parathyroid hormone (PTH)

Question 5

Which of the following is a correct pathway for the hypothalamic-pituitary-adrenal axis?

Accepted Answer

Hypothalamus $$\rightarrow$$ CRH $$\rightarrow$$ Anterior Pituitary $$\rightarrow$$ ACTH $$\rightarrow$$ Adrenal Cortex $$\rightarrow$$ Cortisol

Question 6

Which hormone is responsible for stimulating milk production in the mammary glands?

Accepted Answer

Prolactin

Question 7

A patient with diabetes insipidus is most likely deficient in which hormone?

Accepted Answer

Antidiuretic hormone (ADH)

Question 8

Which hormone is secreted by alpha cells of the pancreas and increases blood glucose levels?

Accepted Answer

Glucagon

Question 9

Which hormone is released in response to low blood pressure and acts on the kidney to increase sodium reabsorption?

Accepted Answer

Aldosterone

Question 10

Which hormone is released by the anterior pituitary and stimulates ovulation in females?

Accepted Answer

Luteinizing hormone (LH)

Question 11

A patient with excessive growth during childhood is likely to have an excess of which hormone?

Accepted Answer

Growth hormone (GH)

Question 12

Which hormone is released by the adrenal medulla in response to sympathetic stimulation?

Accepted Answer

Epinephrine

Question 13

Which hormone is responsible for lowering blood calcium levels?

Accepted Answer

Calcitonin

Question 14

Which hormone is produced by the kidneys and stimulates red blood cell production?

Accepted Answer

Erythropoietin

Question 15

Which hormone is released by adipose tissue and helps regulate appetite?

Accepted Answer

Leptin

Question 16

Which hormone is released by the thymus and is important for the maturation of T lymphocytes?

Accepted Answer

Thymosin

Question 17

Which hormone is released by the posterior pituitary and stimulates uterine contractions during labor?

Accepted Answer

Oxytocin

Question 18

Which hormone is released by the anterior pituitary and stimulates the thyroid gland to produce thyroid hormones?

Accepted Answer

Thyroid-stimulating hormone (TSH)

Question 19

Which hormone is released by the pancreas and lowers blood glucose levels?

Accepted Answer

Insulin

Question 20

Which hormone is released by the ovaries and is responsible for the development of female secondary sexual characteristics?

Accepted Answer

Estrogen

The Endocrine System: Structure, Function, and Hormonal Regulation

Study Guide - Practice Questions