Nokea
The uterus is a ...... organ:
- A. funnel-shaped;
- B. unpaired;
- C. cavitary;
- D. muscular
Correct Answer: D
Rationale: The correct answer is D: muscular. The uterus is composed of smooth muscle tissue, allowing it to contract during childbirth and menstruation. This contraction is essential for the expulsion of the fetus or uterine lining. Funnel-shaped (A) and cavitary (C) describe the shape and structure of the uterus, but they do not define its primary function. Unpaired (B) is incorrect as the uterus is a paired organ in the female reproductive system.
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Where does spermatogenesis occur?
- A. Interstitial cells.
- B. Seminal vesicles.
- C. Seminiferous tubules.
- D. Vas deferens.
Correct Answer: C
Rationale: The correct answer is C: Seminiferous tubules. Spermatogenesis is the process of sperm production, which occurs in the seminiferous tubules of the testes. These tubules contain specialized cells called Sertoli cells and spermatogonia that undergo multiple stages of cell division and maturation to form spermatozoa. Interstitial cells (A) produce testosterone, seminal vesicles (B) secrete seminal fluid, and vas deferens (D) is the duct that carries sperm from the testes to the urethra but is not the site of spermatogenesis.
Concerning Muller’s cells, all are true except:
- A. They share in the formation of the limiting membranes.
- B. They are nerve cells.
- C. They have long processes.
- D. Their nuclei are present in the inner nuclear layer.
Correct Answer: B
Rationale: B: They are nerve cells.
Rationale: Muller's cells are a type of glial cell in the retina, not nerve cells. They provide structural support and play a role in maintaining the retinal environment. Other choices are true: A) They form limiting membranes, C) They have long processes, and D) Their nuclei are in the inner nuclear layer.
Which hormone inhibits the release of FSH from the pituitary gland?
- A. Inhibin
- B. Relaxin
- C. GnRH
- D. hCG
Correct Answer: A
Rationale: Rationale:
1. Inhibin is produced by the ovaries and testes in response to FSH stimulation.
2. Inhibin acts as a negative feedback signal to inhibit further FSH release.
3. This mechanism helps regulate the levels of FSH in the body.
Summary:
- Relaxin is a hormone involved in pregnancy and does not directly inhibit FSH release.
- GnRH stimulates FSH release rather than inhibiting it.
- hCG is produced during pregnancy and does not have a direct role in inhibiting FSH secretion.
A client diagnosed with a vaginal fistula is at risk for low self-esteem. Which of the following would be an appropriate recommendation for the client?
- A. Wear disposable, absorbent incontinence briefs
- B. Avoid the use of commercial deodorizers at home
- C. Abstain from sexual intercourse
- D. Avoid frequent douches
Correct Answer: A
Rationale: Disposable, absorbent incontinence briefs can help manage symptoms and improve comfort and confidence.
Which hormone initiates the changes in puberty?
- A. FSH
- B. ICSH
- C. testosterone
- D. GnRH
Correct Answer: D
Rationale: The correct answer is D: GnRH. Gonadotropin-releasing hormone (GnRH) is released from the hypothalamus, stimulating the pituitary gland to produce FSH and LH, which then trigger the changes of puberty. FSH and LH are not the initial hormones that start puberty, but rather the result of GnRH stimulation. Testosterone and ICSH are also involved in puberty but are not the primary hormone that initiates the process.