Question 1

Which of the following best describes a similarity between the nervous system and the endocrine system?

Accepted Answer

Both systems regulate body functions by releasing chemical messengers.

Question 2

What is the major function of the endocrine system?

Accepted Answer

To regulate and coordinate body activities through hormones.

Question 3

Up-regulation refers to which of the following cellular processes?

Accepted Answer

An increase in the number of hormone receptors on a cell.

Question 4

Which of the following is a tropic hormone?

Accepted Answer

Thyroid-stimulating hormone (TSH)

Question 5

What anatomical structure connects the hypothalamus and the pituitary gland?

Accepted Answer

Infundibulum

Question 6

Which of the following best describes the hypothalamic-hypophyseal portal system?

Accepted Answer

A system of blood vessels that carries hormones from the hypothalamus to the anterior pituitary.

Question 7

Where are releasing and inhibiting hormones produced, and what is their primary function?

Accepted Answer

Produced in the hypothalamus; regulate secretion of anterior pituitary hormones.

Question 8

Which hormone is released by the posterior pituitary and is responsible for water reabsorption in the kidneys?

Accepted Answer

Antidiuretic hormone (ADH, vasopressin)

Question 9

Which pancreatic hormone lowers blood glucose levels, and what is its mechanism of action?

Accepted Answer

Insulin; promotes cellular uptake of glucose.

Question 10

Which of the following best distinguishes Type 1 from Type 2 diabetes mellitus?

Accepted Answer

Type 1 is due to autoimmune destruction of pancreatic beta cells, while Type 2 is primarily due to insulin resistance.

Question 11

ADH (vasopressin) is produced in which part of the brain, and what is its primary function?

Accepted Answer

Produced in the hypothalamus; increases water reabsorption in the kidneys.

Question 12

Which hormone controls the milk let-down reflex during breastfeeding?

Accepted Answer

Oxytocin

Question 13

A patient presents with excessive growth of hands and feet in adulthood. Which hormone is most likely involved, and what is the condition called?

Accepted Answer

Excess growth hormone; Acromegaly

Question 14

Which hormones are produced by the thyroid gland? Select all that apply.

Accepted Answer

$$T_3 ($$triiodothyronine), $$T_4 ($$thyroxine), and calcitonin

Question 15

Which factor stimulates the release of parathyroid hormone ($$PTH$$), and what is its main function?

Accepted Answer

Low blood calcium; increases blood calcium by stimulating bone resorption

Question 16

A patient with Cushing's disease is likely to have which of the following symptoms?

Accepted Answer

Moon face, central obesity, and high blood glucose

Question 17

Aldosterone primarily acts on which organ, and what is its main function?

Accepted Answer

Kidneys; increases sodium reabsorption

Question 18

Which hormone is secreted by the heart, and what is its function?

Accepted Answer

Atrial natriuretic peptide (ANP); decreases blood pressure by promoting sodium excretion

Question 19

A patient with diabetes insipidus is most likely to have a deficiency in which hormone, and what is the expected effect?

Accepted Answer

ADH (vasopressin); excessive urination and dilute urine

Question 20

Which of the following best describes the role of tropic hormones?

Accepted Answer

They stimulate other endocrine glands to release their hormones.

Endocrine System and Hormonal Regulation: Study Guide for Anatomy & Physiology

Study Guide - Practice Questions