The Human Reproductive System

The Human Reproductive System Related

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Following ejaculation, arterial blood flow into the corpora cavernosa decreases back to the normal resting level resulting in the flaccid state. What is the best explanation for this decrease in blood flow?

  • A. Systemic arterial pressure decreases due to absence of sexual stimulation
  • B. The level of sympathetic stimulation to the arterioles supplying the corpora cavernosa decreases
  • C. Resistance of the arterioles supplying the corpora cavernosa increases
  • D. Formation of nitric oxide in the endothelial cells of the arterioles supplying the corpora cavernosa is stimulated by the increase in parasympathetic nervous system activity
Correct Answer: C

Rationale: The correct answer is C because the resistance of the arterioles supplying the corpora cavernosa increases. This occurs due to the contraction of smooth muscle in the arterioles stimulated by sympathetic nervous system activity post-ejaculation. This constriction of arterioles reduces blood flow into the corpora cavernosa, leading to the flaccid state.

Choice A is incorrect because systemic arterial pressure does not decrease significantly post-ejaculation. Choice B is incorrect as decreased sympathetic stimulation would actually lead to vasodilation, not vasoconstriction. Choice D is incorrect because the release of nitric oxide by the parasympathetic nervous system would lead to vasodilation, not vasoconstriction.

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A client with phimosis is not a candidate for surgery. Which of the following suggestions should a nurse give the client?

  • A. Apply a skin cream and try retracting the tissue.
  • B. Wash under the foreskin daily and seek care if he cannot retract the tissue.
  • C. Apply warm soaks to the foreskin.
  • D. Take sitz baths regularly until the tissue retracts.
Correct Answer: B

Rationale: Proper hygiene and seeking care if issues persist are important for managing phimosis non-surgically.

Large process on the femur that is present for attachment of muscles is

  • A. condyle
  • B. tubercle
  • C. bone head
  • D. trochanter
Correct Answer: B

Rationale: The correct answer is B: tubercle. A tubercle is a small rounded projection on a bone where muscles and ligaments can attach. In this case, the large process on the femur that serves as an attachment site for muscles is a tubercle.

Condyle (choice A) is a rounded prominence at the end of a bone, typically for articulation with another bone. Bone head (choice C) refers to the rounded end of a bone, usually forming a joint. Trochanter (choice D) is a large, blunt process on the femur that serves as an attachment point for muscles, but it is not the specific term for the large process on the femur mentioned in the question.

Which part of the uterus opens into the vagina?

  • A. Urethra
  • B. Cervix
  • C. Uterine tubes
  • D. Inguinal canal
Correct Answer: B

Rationale: The correct answer is B: Cervix. The cervix is the lower part of the uterus that opens into the vagina. It acts as a barrier between the uterus and vagina, and allows for the passage of menstrual flow, sperm, and a baby during childbirth. The other choices are incorrect because the urethra is a tube that connects the bladder to the outside of the body, the uterine tubes are also known as fallopian tubes that connect the ovaries to the uterus, and the inguinal canal is a passage in the abdominal wall.

The two oval-shaped organs that produce, store, and release human eggs are called __________________.

  • A. clitoris
  • B. ovaries
  • C. Fallopian tubes
  • D. Vagina
Correct Answer: B

Rationale: The correct answer is B: ovaries. Ovaries are the organs responsible for producing, storing, and releasing human eggs. They are oval-shaped and play a crucial role in the female reproductive system. The other choices are incorrect because:
A: clitoris is a small, sensitive organ located near the entrance of the vagina, not involved in egg production.
C: Fallopian tubes are responsible for transporting eggs from the ovaries to the uterus, not for producing or storing eggs.
D: Vagina is the muscular tube connecting the uterus to the outside of the body, not involved in egg production.

Regarding histology of male reproductive system

  • A. Leydig cells are found in the seminiferous tubule
  • B. Sertoli cells are involved in maturation of spermatids.
  • C. The luminal epithelium of efferent ductules is irregular.
  • D. Contraction of smooth muscle in vas deferens is stimulated via sympathetic
Correct Answer: C

Rationale: The correct answer is C because the luminal epithelium of efferent ductules is indeed irregular, which helps in absorption and modification of fluid. A, Leydig cells are located outside the seminiferous tubule. B, Sertoli cells provide nourishment and support to developing sperm cells but do not mature spermatids. D, Contraction of smooth muscle in vas deferens is stimulated by the parasympathetic nervous system, not the sympathetic.

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