Nokea
Which gland provides fructose, a sugar in semen that energizes sperm?
- A. Seminal vesicles
- B. Bulbourethral gland
- C. Prostate
- D. Epididymis
Correct Answer: A
Rationale: The correct answer is A: Seminal vesicles. These glands produce fructose, a sugar in semen that provides energy for sperm. Seminal vesicles are located near the base of the bladder and are responsible for producing a significant portion of the fluid in semen. The other choices are incorrect because the bulbourethral gland produces a clear lubricating fluid, the prostate produces a milky fluid that helps with sperm motility and viability, and the epididymis is a coiled tube where sperm mature and are stored, but it does not produce fructose.
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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.
As preparation for hysterectomy, Mrs. Washington is having radiation therapy for cancer of the uterus, stage IIa. To promote her self-care during recovery from irradiation, which of the following is correct?
- A. Extensive psychologic support is necessary
- B. Extensive physical care is necessary
- C. Instruction in skin care is a priority
- D. Dietary fiber and roughage should be increased
Correct Answer: C
Rationale: Proper skin care is crucial to manage and prevent radiation-induced skin reactions.
Which hormone is secreted by the corpus luteum after ovulation?
- A. Progesterone
- B. Relaxin
- C. LH
- D. FSH
Correct Answer: A
Rationale: The correct answer is A: Progesterone. After ovulation, the corpus luteum forms from the ruptured follicle and secretes progesterone to prepare the uterus for implantation. Progesterone helps maintain the endometrial lining for potential pregnancy. Choice B, Relaxin, is secreted by the corpus luteum, but its main function is to soften the cervix and pubic symphysis. Choices C and D, LH and FSH respectively, are pituitary hormones involved in the menstrual cycle regulation, not directly secreted by the corpus luteum.
A zygote is
- A. the same as an ovum
- B. another name for secondary oocyte
- C. a diploid fertilized ovum
- D. the same as polar body
Correct Answer: C
Rationale: The correct answer is C: a diploid fertilized ovum. A zygote is formed when a sperm fertilizes an ovum, resulting in a diploid cell with a complete set of chromosomes. This marks the beginning of a new individual.
A) Incorrect: An ovum is a haploid cell produced by the female reproductive system.
B) Incorrect: A secondary oocyte is a haploid cell that has undergone meiosis II but has not been fertilized yet.
D) Incorrect: A polar body is a haploid cell that is produced during oogenesis and eventually disintegrates.
Which of the following is produced by the trophoblast cells during the first 3 weeks of pregnancy?
- A. Estrogen
- B. Luteinizing hormone
- C. Oxytocin
- D. Human chorionic gonadotropin
Correct Answer: D
Rationale: The correct answer is D: Human chorionic gonadotropin (hCG). During the first 3 weeks of pregnancy, trophoblast cells produce hCG, which is crucial for maintaining the corpus luteum and ensuring the production of progesterone to support the early pregnancy. hCG is also the hormone detected in pregnancy tests.
Rationale:
A: Estrogen is mainly produced by the ovaries, not trophoblast cells in the early stages of pregnancy.
B: Luteinizing hormone is produced by the pituitary gland to trigger ovulation, not by trophoblast cells.
C: Oxytocin is produced by the hypothalamus and released by the pituitary gland during labor and breastfeeding, not by trophoblast cells in the early stages of pregnancy.