ATI RN
Endocrinology Practice Questions Questions
Question 1 of 5
Anorexia nervosa is not associated with:
Correct Answer: C
Rationale:
Step-by-step rationale:
1. Anorexia nervosa can affect both males and females.
2.
Therefore, it is not exclusively in females.
3. Hypokalaemia, primary amenorrhea, and low FSH and LH are commonly associated with anorexia nervosa.
4.
Choice C is incorrect as anorexia nervosa can affect individuals of any gender.
Question 2 of 5
The anterior pituitary:
Correct Answer: D
Rationale: The correct answer is D because the anterior pituitary is regulated by hypothalamic neuropeptides. The hypothalamus secretes releasing and inhibiting hormones that control the anterior pituitary's hormone release. This close interaction between the hypothalamus and the anterior pituitary is known as the hypothalamic-pituitary axis.
A is incorrect because the anterior pituitary is not neural tissue, it is an endocrine gland.
B is incorrect because the anterior pituitary synthesizes and secretes peptide hormones, not steroid hormones.
C is incorrect because the anterior pituitary is located at the base of the brain, not above the kidney.
Question 3 of 5
Which of the following visual field deficits is most likely present in a patient with pituitary adenoma compressing his optic chiasm?
Correct Answer: C
Rationale: The correct answer is C: Bi-temporal hemianopia. Pituitary adenoma compressing the optic chiasm typically leads to bi-temporal hemianopia due to compression of the crossing fibers from the nasal visual fields. This results in loss of peripheral vision in both temporal visual fields.
A: Bilateral inferior visual field deficits and B: Bilateral superior visual field deficits are less likely as they are not typical patterns associated with optic chiasm compression.
D: Right homonymous hemianopia is incorrect as it is not associated with compression of the optic chiasm by a pituitary adenoma.
Question 4 of 5
Which of the following is the most common cause of preventable mental deficiency in the world?
Correct Answer: B
Rationale: The correct answer is B: Cretinism. Cretinism is the most common cause of preventable mental deficiency worldwide due to severe iodine deficiency during pregnancy. Iodine is crucial for thyroid hormone production, which is essential for fetal brain development. Beriberi disease (
A) is caused by thiamine deficiency and affects the nervous system, not mental deficiency. Folate deficiency (
C) can cause neural tube defects but not mental deficiency. Vitamin A deficiency (
D) can lead to blindness and immune system issues, but not the most common cause of preventable mental deficiency.
Question 5 of 5
Which of the following proteins is the primary source of bound T4 in the plasma?
Correct Answer: D
Rationale: The correct answer is D: Thyroxine-binding globulin (TBG). TBG is the primary source of bound T4 in the plasma as it specifically binds to and transports thyroid hormones. This protein has the highest affinity for T4 compared to other plasma proteins. Albumin (
A) and gamma globulins (
B) can also bind to thyroid hormones, but TBG is the primary carrier. Thyroid peroxidase (
C) is an enzyme involved in thyroid hormone production, not in binding T4 in the plasma.
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