Question 1

Which of the following best distinguishes between hormonal and neural control of body functioning?

Accepted Answer

Hormonal control uses chemical messengers released into the bloodstream, while neural control uses electrical impulses transmitted along neurons.

Question 2

Which of the following is NOT considered a major endocrine organ?

Accepted Answer

Spleen

Question 3

A hormone binds to receptors on a target cell and initiates a signaling cascade. Which of the following best describes this process?

Accepted Answer

The hormone binds to a receptor, triggering a series of intracellular events that alter cell function.

Question 4

Which equation best represents the negative feedback mechanism regulating hormone levels?

Accepted Answer

$$H_{output} = H_{input} - F_{feedback}$$

Question 5

Which of the following best explains how the hypothalamus and pituitary gland interact?

Accepted Answer

The hypothalamus produces hormones that are stored and released by the pituitary gland.

Question 6

A patient presents with symptoms of excessive thirst and urination. Which hormone is most likely deficient?

Accepted Answer

Antidiuretic hormone (ADH)

Question 7

Which of the following is a direct effect of growth hormone (GH) on the body?

Accepted Answer

Increases blood glucose by stimulating gluconeogenesis in the liver.

Question 8

Which hormone is released in response to low blood calcium levels?

Accepted Answer

Parathyroid hormone (PTH)

Question 9

A patient with damage to the anterior pituitary would most likely experience which of the following?

Accepted Answer

Decreased secretion of thyroid-stimulating hormone (TSH)

Question 10

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

Accepted Answer

Endocrine glands secrete hormones directly into the bloodstream, while exocrine glands secrete substances into ducts.

Question 11

Which hormone is primarily responsible for regulating blood glucose levels after a meal?

Accepted Answer

Insulin

Question 12

Which of the following is a function of the adrenal medulla?

Accepted Answer

Secretion of epinephrine and norepinephrine during stress

Question 13

A patient with hyperthyroidism is likely to experience which of the following symptoms?

Accepted Answer

Increased metabolic rate and weight loss

Question 14

Which of the following equations best represents the relationship between hormone concentration ($$[H]) $$and physiological response ($$R) in a $$target cell?

Accepted Answer

$$R = k 	imes [H]$$

Question 15

Which hormone is secreted by the pancreas to increase blood glucose levels during fasting?

Accepted Answer

Glucagon

Question 16

Which of the following best describes the effect of parathyroid hormone (PTH) on bone tissue?

Accepted Answer

Stimulates osteoclasts to break down bone and release calcium into the blood

Question 17

Which hormone is released by the posterior pituitary and is involved in childbirth and lactation?

Accepted Answer

Oxytocin

Question 18

A patient with Addison's disease has insufficient production of adrenal cortex hormones. Which hormone is most likely deficient?

Accepted Answer

Cortisol

Question 19

Which of the following best explains the role of negative feedback in hormone regulation?

Accepted Answer

It decreases hormone secretion when levels are high, maintaining homeostasis.

Question 20

Which of the following is the correct location for the pineal gland?

Accepted Answer

In the brain, near the center between the two hemispheres

Study Notes: The Endocrine System (Anatomy & Physiology)

Study Guide - Practice Questions

Study Guide - Flashcards