Nokea
A nurse teaches a male client how to perform a testicular self-exam in an effort to identify lumps that may be present in the testes. What does the nurse teach the client regarding normal testes size?
- A. Both testes should be the same size
- B. One testis is usually larger than the other
- C. One testis usually has a lump; the other does not
- D. Both testes usually have lumps
Correct Answer: B
Rationale: It is normal for one testicle to be slightly larger than the other.
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Seminiferous tubules are lined with:
- A. Oocytes
- B. red blood cells
- C. Leydig cells
- D. Sertoli cells
Correct Answer: D
Rationale: The correct answer is D: Sertoli cells. Seminiferous tubules are lined with Sertoli cells, which provide structural support and nourishment to developing sperm cells. These cells also help in the process of spermatogenesis.
A: Oocytes are female germ cells found in the ovaries, not in the seminiferous tubules.
B: Red blood cells are not found in the seminiferous tubules. They are responsible for carrying oxygen in the bloodstream.
C: Leydig cells are found in the interstitial tissue of the testes and are responsible for producing testosterone, not lining the seminiferous tubules.
Therefore, the correct choice is D as Sertoli cells play a crucial role in sperm production within the seminiferous tubules.
Within each ovary there are thousands of small sacs called
- A. Ova
- B. Graafian follicle
- C. Corpus luteum
- D. Cysts
Correct Answer: B
Rationale: The correct answer is B: Graafian follicle. Within the ovary, thousands of small sacs called follicles develop and grow, with one dominant follicle eventually maturing into a Graafian follicle. This structure contains the ovum (egg) and is released during ovulation. Ova (A) are the mature eggs released from the Graafian follicle. Corpus luteum (C) forms after ovulation and produces hormones to support pregnancy. Cysts (D) are abnormal fluid-filled sacs that can develop in the ovaries, different from the normal follicles.
When men age, what is the effect of prostate gland enlargement?
- A. It compromises the ability to fertilize ova
- B. It compromises erectile function
- C. It compromises urination
- D. It compromises sperm production
Correct Answer: C
Rationale: Prostate gland enlargement commonly affects urination by obstructing the urethra.
The structure between the uterus and the vagina is the
- A. uterine tube
- B. cervix
- C. vulva
- D. hymen
Correct Answer: B
Rationale: The correct answer is B: cervix. The cervix is the structure between the uterus and the vagina, serving as the lower part of the uterus that connects to the vagina. It plays a crucial role in pregnancy by allowing sperm to enter the uterus and facilitating the passage of menstrual blood.
Rationale:
1. The uterine tube (A) is not the correct answer as it connects the ovaries to the uterus and is not located between the uterus and the vagina.
2. The vulva (C) is the external genitalia and is not the structure between the uterus and the vagina.
3. The hymen (D) is a thin membrane at the opening of the vagina and does not serve as the structure between the uterus and the vagina.
The purpose of the urethra is to
- A. carry only urine
- B. carry only semen
- C. carry a mixture of semen and urine
- D. carry both semen and urine but not at the same time
Correct Answer: D
Rationale: The correct answer is D. The urethra is a tube that carries both urine from the bladder and semen from the reproductive system. This is essential for the excretion of waste (urine) and reproduction (semen). Choice A is incorrect because the urethra carries both urine and semen. Choice B is incorrect as the urethra carries both substances, not just semen. Choice C is incorrect because the urethra carries semen and urine separately, not as a mixture. Overall, choice D is correct because the urethra can carry both semen and urine, just not simultaneously.