Nokea
After a thyroidectomy, Mr. M begins to show signs of tetany. The nurse should suspect a deficiency of which of the following?
- A. Insulin
- B. Parathyroid hormone
- C. Thyroid hormone
- D. Corticosteroids
Correct Answer: B
Rationale: Tetany is often caused by a decrease in parathyroid hormone, which can lead to hypocalcemia, a common complication after thyroid surgery.
You may also like to solve these questions
Which of the following hormones helps conserve water during dehydration?
- A. Atrial natriuretic peptide
- B. Oxytocin
- C. Aldosterone
- D. Thyroxine
Correct Answer: C
Rationale: Aldosterone is the correct answer because it acts on the kidneys to increase reabsorption of sodium and water, helping conserve water during dehydration. Atrial natriuretic peptide promotes sodium excretion, oxytocin is involved in labor and milk ejection, and thyroxine regulates metabolism.
In relation to noradrenaline, all of the following are true EXCEPT:
- A. It stimulates α and β receptors
- B. It decreases heart rate
- C. It decreases blood pressure
- D. Causes vasoconstriction
Correct Answer: C
Rationale: Rationale:
- Noradrenaline stimulates both α and β receptors, leading to increased heart rate and vasoconstriction.
- It does not decrease heart rate; it actually increases heart rate due to its actions on β receptors.
- Noradrenaline causes vasoconstriction by activating α receptors, leading to increased blood pressure.
- The incorrect statement is C, as noradrenaline actually increases blood pressure by causing vasoconstriction.
The endocrine gland responsible for the body’s circadian rhythm is:
- A. Thymus
- B. Pineal
- C. Parathyroid
- D. Pituitary
Correct Answer: B
Rationale: The correct answer is B: Pineal gland. The pineal gland secretes melatonin, a hormone that regulates the body's circadian rhythm. Melatonin helps control the sleep-wake cycle, making the pineal gland crucial for maintaining our internal body clock. The other choices, Thymus, Parathyroid, and Pituitary glands, are not directly involved in regulating circadian rhythms. Thymus is responsible for immune function, Parathyroid regulates calcium levels, and Pituitary gland controls various hormones but not specifically circadian rhythm. Hence, the pineal gland is the correct choice for this question.
ADH will stimulate _____ water reabsorption by the kidneys and ______ of the blood vessels; thus _____ blood pressure.
- A. decrease: constriction: increase
- B. decrease: dilation: decrease
- C. increase: constriction: increase
- D. increase: dilation: decrease
Correct Answer: C
Rationale: The correct answer is C because ADH (antidiuretic hormone) increases water reabsorption by the kidneys (increasing blood volume), causes vasoconstriction (narrowing of blood vessels), and ultimately leads to an increase in blood pressure. Choice A is incorrect because ADH does not decrease water reabsorption. Choice B is incorrect because ADH does not cause dilation of blood vessels, which would decrease blood pressure. Choice D is incorrect because ADH does not cause dilation of blood vessels, which would not lead to a decrease in blood pressure.
Annabelle has been referred to an endocrinologist for evaluation of the following symptoms: infertility, hypogonadism, and delayed puberty. Which hormone(s) from the pituitary is/are lacking in Annabelle?
- A. FSH and LH.
- B. ACTH.
- C. TSH.
- D. Growth hormone.
Correct Answer: A
Rationale: Infertility, hypogonadism, and delayed puberty in women are commonly due to a deficiency in the pituitary hormones FSH and LH, which regulate reproductive function.