Endocrine System MCQ Questions

Endocrine System MCQ Questions Related

Review Endocrine System MCQ Questions related questions and content

Which gland is often referred to as the 'master gland'?

  • A. Pituitary
  • B. Thyroid
  • C. Thymus
  • D. Hypothalamus
Correct Answer: A

Rationale: The pituitary gland is often referred to as the 'master gland' because it plays a crucial role in regulating other endocrine glands in the body. It secretes hormones that control various bodily functions, such as growth, reproduction, and metabolism. The other choices, thyroid, thymus, and hypothalamus, are important glands as well, but they do not have the same broad control over the endocrine system as the pituitary gland. The thyroid regulates metabolism, thymus is involved in immune function, and hypothalamus regulates body temperature, hunger, and thirst. However, none of these glands have the overall regulatory function and influence on other glands as the pituitary gland does.

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If the male labelled X is later mated to a black female, what ratio of coat colour would be expected in the offspring?

  • A. all black
  • B. all brown
  • C. 3:1 brown: black
  • D. 1:1 brown: black
Correct Answer: D

Rationale: The male labeled X must carry both brown and black coat color genes as it is brown. When mated with a black female, the male will pass on either a brown or black gene to the offspring. This results in a 1:1 ratio of brown to black coat color in the offspring. All black (A) and all brown (B) are incorrect as the male carries both genes. The 3:1 ratio (C) is not applicable here as the male can pass on either brown or black gene equally.

Which is NOT part of the normal content of gastric juice?

  • A. HPO42-
  • B. mucus
  • C. lipase
  • D. amylase
Correct Answer: D

Rationale: The correct answer is D: amylase. Gastric juice primarily contains hydrochloric acid, pepsinogen, and mucus, but not amylase. Amylase is an enzyme produced in the mouth and pancreas that helps break down carbohydrates, not typically found in gastric juice. HPO42- is a phosphate ion present in gastric juice. Lipase is an enzyme that aids in the digestion of fats and can be found in pancreatic juice, not gastric juice. Mucus is secreted by the stomach lining to protect it from the acidic environment of gastric juice.

All of the following are hormones of the anterior pituitary except:

  • A. Growth hormone
  • B. Follicle stimulating hormone
  • C. Parthormone
  • D. Thyroid stimulating hormone
Correct Answer: C

Rationale: The correct answer is C: Parthormone. The anterior pituitary gland secretes hormones such as Growth hormone, Follicle stimulating hormone, and Thyroid stimulating hormone, but not Parthormone. Parthormone is actually produced by the parathyroid glands, not the anterior pituitary gland. Parathormone plays a key role in regulating calcium levels in the blood. Therefore, choice C is incorrect as it does not belong to the hormones secreted by the anterior pituitary gland.

A clinic nurse wants to evaluate the effectiveness of her health teaching about diet and insulin administration. Which of the following observations during the patient's next clinic visit would indicate that the patient had learned what she had been taught?

  • A. A weight gain of 6 lb
  • B. An elevated blood glucose
  • C. Urine test negative for sugar and acetone
  • D. Beginning hypertrophy at an injection site
Correct Answer: C

Rationale: A negative urine test for sugar and acetone would show that the patient has learned proper insulin administration and diet management.

____________ is a steroid hormone.

  • A. Vitamin D
  • B. Epinephrine
  • C. Insulin
  • D. all of these
Correct Answer: A

Rationale: Vitamin D is the correct answer as it is a steroid hormone synthesized from cholesterol. Steroid hormones are derived from cholesterol and have a similar chemical structure. Epinephrine and Insulin are not steroid hormones. Epinephrine is a catecholamine produced by the adrenal glands, and Insulin is a peptide hormone produced by the pancreas. Choice D is incorrect as not all options listed are steroid hormones.

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