Multiple Choice Questions on Endocrine System

Multiple Choice Questions on Endocrine System Related

Review Multiple Choice Questions on Endocrine System related questions and content

One of the two hormones made by the pituitary that help regulate reproductive cells is luteinizing hormone. The other hormone is .

  • A. follicle-stimulating hormone
  • B. epinephrine
  • C. norepinephrine
  • D. androgens
Correct Answer: A

Rationale: The correct answer is A: follicle-stimulating hormone (FSH). FSH is the other hormone made by the pituitary gland that helps regulate reproductive cells, along with luteinizing hormone (LH). FSH is responsible for stimulating the growth and maturation of ovarian follicles in females and spermatogenesis in males.

Explanation:
1. FSH is directly involved in the reproductive process by stimulating follicle development and sperm production.
2. Epinephrine and norepinephrine are not hormones produced by the pituitary gland and are involved in the stress response.
3. Androgens are male sex hormones produced primarily by the testes, not the pituitary gland.

In summary, FSH is the correct answer as it plays a crucial role in regulating reproductive cells, while the other choices are not involved in the reproductive system or are not produced by the pituitary gland.

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Which equation is used to calculate the power P of the machine?

  • A. P = ΔE × t
  • B. P = W × t
  • C. P = ΔE / t
  • D. P = W / ΔE
Correct Answer: C

Rationale: The correct equation for calculating power is P = ΔE / t. Power is defined as the rate at which work is done or energy is transferred. In this equation, ΔE represents the change in energy and t represents the time taken for that change. Dividing the change in energy by the time gives us the power. This equation aligns with the fundamental definition of power.

Choice A (P = ΔE × t) is incorrect because it implies that power is directly proportional to both the change in energy and time, which is not always the case.

Choice B (P = W × t) is incorrect because it incorrectly uses work (W) in the equation for power, while power is specifically related to the rate at which work is done, not the work itself.

Choice D (P = W / ΔE) is incorrect because it suggests power is inversely proportional to the change in energy, which is not a characteristic of power.

Which is not Na+ dependent for absorption?

  • A. thiamin
  • B. riboflavin
  • C. niacin
  • D. folate
Correct Answer: D

Rationale: The correct answer is D: folate. Folate absorption is not Na+ dependent as it is primarily absorbed in the small intestine through a carrier-mediated process that is independent of sodium. Thiamin, riboflavin, and niacin absorption, on the other hand, are Na+ dependent processes that rely on sodium co-transporters for uptake in the small intestine. Thiamin is absorbed through a sodium-dependent active transport system, riboflavin requires a sodium-dependent carrier protein for absorption, and niacin absorption involves a sodium-dependent transporter in the small intestine. Therefore, folate is the only option that is not Na+ dependent for absorption.

Which of the following is NOT true of testosterone?

  • A. growth of the penis and testes.
  • B. brings about the male secondary sex characteristics.
  • C. can cause baldness.
  • D. controlled from the thyroid gland.
Correct Answer: D

Rationale: The correct answer is D because testosterone is not controlled by the thyroid gland. Testosterone is primarily produced in the testes and regulated by the hypothalamus and pituitary gland. The other choices (A, B, C) are all true of testosterone. Testosterone is responsible for the growth of the penis and testes (A), development of male secondary sex characteristics (B), and can potentially lead to baldness due to its effects on hair follicles (C). Thyroid gland primarily regulates metabolism and energy levels, not testosterone production.

The secretion of parathyroid hormone is a good example of __________.

  • A. pituitary gland stimuli
  • B. humoral stimuli
  • C. neural stimuli
  • D. hormonal stimuli
Correct Answer: B

Rationale: The correct answer is B: humoral stimuli. Parathyroid hormone secretion is regulated by the concentration of calcium in the blood, which is an example of humoral stimuli. When blood calcium levels decrease, parathyroid hormone is released to increase calcium levels. Pituitary gland stimuli (A), neural stimuli (C), and hormonal stimuli (D) are not directly involved in the regulation of parathyroid hormone secretion.

The secretions from which of these glands differs between males and females?

  • A. Adrenal.
  • B. Parathyroid.
  • C. Gonadal.
  • D. Pancreas.
Correct Answer: C

Rationale: The correct answer is C: Gonadal glands. These glands differ between males and females in terms of the hormones they secrete. In males, the gonadal glands (testes) produce testosterone, while in females, the gonadal glands (ovaries) produce estrogen and progesterone. Adrenal glands (A) secrete hormones like cortisol and adrenaline, which are not gender-specific. Parathyroid glands (B) regulate calcium levels and are not gender-specific. Pancreas (D) secretes insulin and glucagon, which are also not gender-specific. Therefore, the key difference in secretions between males and females lies in the gonadal glands.

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