Nokea
Which hormone stimulates Leydig cells to secrete testosterone?
- A. GnRH
- B. LH
- C. Inhibin
- D. DHT
Correct Answer: B
Rationale: LH (luteinizing hormone) stimulates Leydig cells to secrete testosterone by binding to its receptor on the Leydig cells, triggering the production and release of testosterone. GnRH (choice A) stimulates the release of LH, not testosterone directly. Inhibin (choice C) inhibits FSH secretion but does not directly stimulate testosterone production. DHT (choice D) is a metabolite of testosterone and does not stimulate Leydig cells to produce testosterone.
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The embryo, upon reaching the UTERUS, will embed itself into the endometrium. This is called _____
- A. Menopause
- B. ovulation
- C. Implantation
- D. menstruation
Correct Answer: C
Rationale: The correct answer is C: Implantation. After fertilization, the embryo travels through the fallopian tube and reaches the uterus. During implantation, the embryo attaches itself to the endometrium lining of the uterus for further development. Menopause (A) is the cessation of menstrual cycles, ovulation (B) is the release of an egg from the ovary, and menstruation (D) is the shedding of the uterine lining if fertilization does not occur.
A client has been diagnosed with thrombophlebitis. The nurse needs to closely monitor the client for detecting, managing, and minimizing the risk for thrombophlebitis development. Which of the following nursing actions will help a nurse minimize the occurrence of thrombophlebitis in the client?
- A. Give warm sitz baths after sutures have been removed
- B. Apply an air or egg crate mattress to the bed
- C. Administer prescribed analgesics liberally
- D. Assess for and report calf pain or calf tenderness
Correct Answer: D
Rationale: Calf pain or tenderness can be indicative of deep vein thrombosis, a complication of thrombophlebitis.
What is the function of the prolactin hormone?
- A. Prolactin promotes the production of milk from elements in the blood.
- B. Prolactin stimulates the development of alveoli.
- C. Prolactin stimulates increased production of tubules and ducts.
- D. Prolactin promotes the growth and development of the breasts' fatty tissue.
Correct Answer: A
Rationale: Prolactin is primarily responsible for milk production in the mammary glands.
Which cells in the seminiferous tubules progress through the first meiotic division?
- A. Sertoli cells
- B. Spermatogonia
- C. Spermatid
- D. primary spermatocyte
Correct Answer: D
Rationale: The correct answer is D: primary spermatocyte. Primary spermatocytes are the cells in the seminiferous tubules that progress through the first meiotic division. During this division, primary spermatocytes undergo DNA replication and then divide into two secondary spermatocytes. These secondary spermatocytes will then undergo the second meiotic division to produce haploid spermatids.
Explanation for why other choices are incorrect:
A: Sertoli cells are supporting cells in the seminiferous tubules but do not undergo meiotic divisions.
B: Spermatogonia are the undifferentiated germ cells that give rise to primary spermatocytes but do not progress through meiotic divisions.
C: Spermatids are the haploid cells produced after the two meiotic divisions, so they do not progress through the first meiotic division.
In summary, primary spermatocytes are the cells that go through the first meiotic division in the seminiferous tubules
A “birth control” compound for men has been sought for several decades. Which of the following would provide effective sterility?
- A. Substance that mimics the actions of luteinizing hormone
- B. Substance that blocks the actions of inhibin
- C. Substance that blocks the actions of follicle-stimulating hormone
- D. Substance that mimics the actions of gonadotropin-releasing hormone
Correct Answer: C
Rationale: The correct answer is C: Substance that blocks the actions of follicle-stimulating hormone. By blocking the actions of FSH, sperm production in the testes would be inhibited, leading to effective sterility. FSH plays a crucial role in stimulating sperm production, so blocking its actions would prevent the development of mature sperm.
Explanation for why the other choices are incorrect:
A: Substance that mimics the actions of luteinizing hormone - Mimicking LH would not necessarily lead to effective sterility in men.
B: Substance that blocks the actions of inhibin - Inhibin regulates FSH secretion but blocking it would not directly lead to effective sterility.
D: Substance that mimics the actions of gonadotropin-releasing hormone - Mimicking GnRH would not directly impact sperm production and sterility.