Question 1

Which gland functions as both an endocrine and exocrine gland, producing hormones that regulate blood glucose and digestive enzymes?

Accepted Answer

Pancreas

Question 2

Which hormone is secreted by the thyroid gland and is responsible for lowering blood calcium levels by inhibiting osteoclast activity?

Accepted Answer

Calcitonin

Question 3

Which of the following is an example of a lipid-soluble hormone?

Accepted Answer

Cortisol

Question 4

Which hormone is released by the adrenal medulla during the fight-or-flight response and is associated with sympathetic nervous system activation?

Accepted Answer

Epinephrine

Question 5

What is the primary function of the parathyroid hormone (PTH)?

Accepted Answer

Increase blood calcium levels by stimulating bone resorption

Question 6

Which hormone is synthesized by beta cells of the pancreas and lowers blood glucose levels?

Accepted Answer

Insulin

Question 7

Which of the following is NOT a tropic hormone?

Accepted Answer

Prolactin

Question 8

Which hormone is responsible for stimulating gamete (egg and sperm) production?

Accepted Answer

Follicle-stimulating hormone (FSH)

Question 9

Which of the following is a correct example of negative feedback in endocrine regulation?

Accepted Answer

Parathyroid hormone release in response to low blood calcium, then inhibition when calcium rises

Question 10

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

Accepted Answer

Glucagon

Question 11

Which gland produces hormones that regulate the body's major metabolic rate?

Accepted Answer

Thyroid gland

Question 12

Which hormone is released by the posterior pituitary and is responsible for uterine contractions and milk ejection?

Accepted Answer

Oxytocin

Question 13

Which of the following is a peptide hormone that lowers blood calcium by inhibiting osteoclast activity?

Accepted Answer

Calcitonin

Question 14

Which hormone is antagonistic to parathyroid hormone in regulating blood calcium levels?

Accepted Answer

Calcitonin

Question 15

Which of the following is a steroid hormone derived from cholesterol?

Accepted Answer

Testosterone

Question 16

Which hormone is released by the adrenal cortex and increases sodium reabsorption in the kidneys?

Accepted Answer

Aldosterone

Question 17

Which of the following is a second messenger commonly used by protein or amino acid-based hormones?

Accepted Answer

$$cAMP$$

Question 18

Which hormone is responsible for stimulating the release of glucocorticoids from the adrenal cortex?

Accepted Answer

Adrenocorticotropic hormone (ACTH)

Question 19

Which hormone is secreted in response to stress and is part of the general adaptation syndrome?

Accepted Answer

Cortisol

Question 20

Which of the following best describes the permissive effect in hormone interactions?

Accepted Answer

One hormone enhances the responsiveness of a target cell to another hormone

Endocrine System: Glands, Hormones, and Regulation

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