Human Reproductive System pdf

Human Reproductive System pdf Related

Review Human Reproductive System pdf related questions and content

How many chromosomes are present in a sperm?

  • A. 1
  • B. 2
  • C. 12
  • D. 23
Correct Answer: D

Rationale: The correct answer is D: 23. Sperm cells are haploid, meaning they contain half the number of chromosomes as normal body cells. In humans, normal body cells have 46 chromosomes (23 pairs), while sperm cells have only 23 chromosomes. This is essential for maintaining the correct chromosome number after fertilization.

A: 1 - Incorrect. Sperm cells cannot have only 1 chromosome as they need to contribute genetic material during fertilization.
B: 2 - Incorrect. Having only 2 chromosomes would not provide sufficient genetic diversity for offspring.
C: 12 - Incorrect. This number does not align with the haploid nature of sperm cells in humans with 23 chromosomes.

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A client is learning how to maintain optimum bladder function. Which of the following strategies identifies the method of pressing on the bladder while seated on the toilet?

  • A. Valsalva maneuver
  • B. Kegel maneuver
  • C. Pelvic floor maneuver
  • D. Crede's maneuver
Correct Answer: D

Rationale: Crede's maneuver involves applying manual pressure to the bladder to aid in voiding.

Prophase I of the spermatocyte phase lasts approximately:

  • A. 2 hours
  • B. 24 hours
  • C. 2 days
  • D. 16 days
Correct Answer: D

Rationale: The correct answer is D (16 days) because prophase I of spermatocyte phase involves complex processes like chromosome pairing and recombination, which take time. It is a crucial stage in sperm formation. Choices A, B, and C are incorrect as they underestimate the duration required for these intricate cellular events to occur. A shorter timeframe would not allow for proper genetic exchange and segregation, essential for genetic diversity in offspring. Thus, a longer duration like 16 days is necessary for the completion of prophase I in spermatocyte phase.

Once sperm are produced by the testes they move into and mature in the

  • A. seminiferous tubes
  • B. penis
  • C. vas deferens
  • D. epididymis
Correct Answer: D

Rationale: The correct answer is D: epididymis. After being produced in the testes, sperm move into the epididymis for maturation. The epididymis provides the optimal environment for sperm storage and maturation, allowing them to gain motility and fertilization capability. The seminiferous tubes (A) are where sperm are produced, not matured. The penis (B) is the external organ for ejaculation, not maturation. The vas deferens (C) is the tube that carries mature sperm from the epididymis to the urethra, not the site of sperm maturation.

Morphology of fibrocytic disease:

  • A. Apocrine metaplasia
  • B. Proliferation of ductules
  • C. Epithelial hyperplasia
  • D. Giant cell
Correct Answer: C

Rationale: The correct answer is C: Epithelial hyperplasia. Fibrocytic disease involves nonproliferative and proliferative fibrocystic changes in the breast tissue. Epithelial hyperplasia is a common proliferative change seen in fibrocystic disease, characterized by increased number of epithelial cells in the ducts and lobules. Apocrine metaplasia, choice A, is another common change in fibrocystic disease but is not specific to morphology. Proliferation of ductules, choice B, is not a characteristic feature of fibrocystic disease. Giant cells, choice D, are not typically associated with fibrocystic changes.

A nurse is working with a client who has undergone chemotherapy for breast cancer. The client is experiencing body image disturbances. Which of the following symptoms would contribute to this psychosocial issue?

  • A. Fatigue
  • B. Vomiting
  • C. Hair loss
  • D. Nausea
Correct Answer: C

Rationale: Hair loss is a visible side effect of chemotherapy that can significantly impact body image.

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