Q: A researcher is studying hormone diffusion from an endocrine gland. Which equation best represents the rate of diffusion ($$J) of a $$hormone across a membrane, given concentration difference ($$ riangle C$$), membrane area ($$A$$), and diffusion coefficient ($$D$$)?

$$J = D \times A \times \triangle C$$

Question 1

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

Accepted Answer

Endocrine glands are ductless and secrete their products into interstitial fluid, which then diffuses into the blood, while exocrine glands secrete their products into ducts.

Question 2

A patient has a tumor blocking the ducts of a gland. Which type of gland is most likely affected?

Accepted Answer

Exocrine gland

Question 3

Which of the following glands is NOT exclusively an endocrine gland?

Accepted Answer

Pancreas

Question 4

A hormone is released by an endocrine gland and travels through the bloodstream to affect a distant target cell. Which process best describes this?

Accepted Answer

Endocrine signaling

Question 5

Which of the following is a correct sequence for hormone release from an endocrine gland?

Accepted Answer

Gland → interstitial fluid → blood → target cell

Question 6

If a person’s adrenal gland is damaged and cannot secrete hormones, which of the following is most likely to occur?

Accepted Answer

Hormones will not be released into the bloodstream, affecting distant target cells.

Question 7

Which of the following glands is responsible for regulating metabolism and is classified as an endocrine gland?

Accepted Answer

Thyroid gland

Question 8

A researcher is studying hormone diffusion from an endocrine gland. Which equation best represents the rate of diffusion ($$J) of a $$hormone across a membrane, given concentration difference ($$	riangle C$$), membrane area ($$A$$), and diffusion coefficient ($$D$$)?

Accepted Answer

$$J = D 	imes A 	imes 	riangle C$$

Question 9

Which of the following is a function of the pituitary gland?

Accepted Answer

Regulating growth and development through hormone secretion

Question 10

A patient with a malfunctioning parathyroid gland is likely to experience problems with which physiological process?

Accepted Answer

Calcium homeostasis

Question 11

Which of the following best explains why endocrine glands are considered 'ductless'?

Accepted Answer

They release their products into interstitial fluid, which then diffuses into the blood.

Question 12

Which gland is both an endocrine and exocrine gland?

Accepted Answer

Pancreas

Question 13

A hormone released by the adrenal gland travels through the bloodstream and binds to a receptor on a distant cell. What is the term for the cell that receives the hormone?

Accepted Answer

Target cell

Question 14

Which of the following is NOT a primary endocrine gland?

Accepted Answer

Ovaries

Question 15

A patient’s blood test shows abnormally low levels of hormones that regulate sleep cycles. Which gland is most likely malfunctioning?

Accepted Answer

Pineal gland

Question 16

Which of the following best describes the route of hormone transport from an endocrine gland to its target cell?

Accepted Answer

Endocrine gland → interstitial fluid → blood → target cell

Question 17

A medical student is asked to identify a gland that is NOT exclusively endocrine. Which should they choose?

Accepted Answer

Pancreas

Question 18

Which of the following is a correct statement about the thymus gland?

Accepted Answer

It is not exclusively an endocrine gland.

Question 19

A scientist is measuring the concentration of a hormone in the blood after secretion from an endocrine gland. Which formula would best represent the concentration ($$C) of $$hormone in the blood after time $$t$$, given a secretion rate $$S$$ and a clearance rate $$k$$?

Accepted Answer

$$C = S 	imes e$$^{-kt}$$

Question 20

Which of the following glands is responsible for producing hormones that regulate calcium levels in the body?

Accepted Answer

Parathyroid gland

Overview of the Endocrine System: Anatomy & Physiology Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard