Nokea
Which hormone does not play a role in regulating fluid and electrolyte balance?
- A. ADH
- B. aldosterone
- C. leptin
- D. atrial natriuretic peptide
Correct Answer: C
Rationale: Leptin does not play a role in regulating fluid and electrolyte balance because it is primarily involved in regulating energy balance and appetite. ADH (antidiuretic hormone) helps in water reabsorption, aldosterone regulates sodium and potassium levels, and atrial natriuretic peptide promotes sodium excretion. Leptin's main function is to regulate hunger and energy expenditure, making it unrelated to fluid and electrolyte balance regulation.
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The mother of a 10-year-old boy asks the nurse to discuss the recognition of puberty. The nurse should reply by saying:
- A. Puberty usually begins around 15 years of ag
- C. The first sign of puberty is an enlargement of the testes.
- D. The penis size does not increase until about 16 years of ag
Correct Answer: C
Rationale: The correct answer is C because the first sign of puberty in boys is typically an enlargement of the testes due to increased testosterone production. This occurs around age 10-14. Choice A is incorrect as puberty usually begins around 10-14 years of age. Choice D is incorrect as penis growth usually starts during puberty, not at 16.
A 25-year-old woman presents to the clinic with pain in her lower abdomen and an abnormal pap smear result. The nurse suspects that she might have an ectopic pregnancy. Which of the following is the most common symptom of ectopic pregnancy?
- A. Severe pain on one side of the lower abdomen.
- B. Severe nausea and vomiting.
- C. Pain with urination or bowel movements.
- D. Frequent urination.
Correct Answer: B
Rationale: The correct answer is B: Severe nausea and vomiting. In an ectopic pregnancy, the fertilized egg implants outside the uterus, commonly in the fallopian tube. As the pregnancy progresses, the tube can rupture, leading to severe internal bleeding. This bleeding can irritate the abdominal lining, causing nausea and vomiting. Severe pain on one side of the lower abdomen (choice A) is also common but not the most common symptom. Pain with urination or bowel movements (choice C) and frequent urination (choice D) are not typical symptoms of ectopic pregnancy.
The female gonad is called a(n)
- A. placenta
- B. fallopian tube
- C. fimbria
- D. ovary
Correct Answer: D
Rationale: The correct answer is D: ovary. The female gonad is the primary reproductive organ that produces eggs and secretes hormones. The ovary is specifically responsible for these functions. Placenta (A) is an organ formed during pregnancy, fallopian tube (B) is a part of the female reproductive system that transports eggs, and fimbria (C) are finger-like projections at the end of the fallopian tube. Therefore, the ovary is the only choice that accurately represents the female gonad.
The commonest type of ureteric calculus is
- A. calcium oxalate
- B. triple phosphate
- C. urate
- D. cysteine
Correct Answer: A
Rationale: The correct answer is A: calcium oxalate. This is because calcium oxalate stones are the most common type of ureteric calculus, accounting for around 75% of cases. They form due to an excess of calcium and oxalate in the urine. Triple phosphate stones (choice B) are more commonly found in the bladder and are associated with urinary tract infections. Urate stones (choice C) are less common and typically seen in patients with gout or acidic urine. Cysteine stones (choice D) are rare and usually seen in patients with a genetic disorder affecting cysteine metabolism.
The first physical sign associated with puberty in boys is:
- A. Height spurt
- B. Penis lengthening
- C. Sperm production
- D. Pubic hair development
Correct Answer: E
Rationale: I'm sorry, but it seems there might be a mistake in the question as there is no option E provided. However, I can provide a rationale for each option based on the typical sequence of physical changes during puberty in boys. The first physical sign associated with puberty in boys is usually pubic hair development (D), followed by penis lengthening (B), height spurt (A), and lastly sperm production (C). Pubic hair development is often the initial visible sign of puberty due to hormonal changes. Height spurt and penis lengthening occur later in puberty, while sperm production typically begins towards the end of puberty.