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What correct information will the nurse provide?
- A. Fertilization of an ovum requires penetration by several sperm.'
- B. An ovum must be fertilized within 24 hours of ovulation.'
- C. It takes 4 to 5 days for sperm to reach the fallopian tubes.'
- D. Sperm live for only 24 hours following ejaculation.'
Correct Answer: B
Rationale: After ovulation, the egg lives for only 24 hours. Sperm must be available during that time if fertilization is to occur.
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Where are the secretions responsible for nourishing sperm excreted from?
- A. Vas deferens
- B. Epididymis
- C. Cowper's gland
- D. Scrotum
Correct Answer: C
Rationale: The Cowper's gland secretions nourish the sperm.
When describing the female reproductive tract to a pregnant woman, the nurse would explain that which uterine layer is involved in implantation?
- A. Perimetrium
- B. Endometrium
- C. Myometrium
- D. Internal os
Correct Answer: B
Rationale: The endometrium is the inner mucosal layer of the uterus that is governed by cyclical hormonal changes. It is functional during menstruation and during the implantation of a fertilized ovum.
The nurse is aware that the diagonal conjugate is 12 cm. What is the measurement in centimeters of the obstetric conjugate?
- A. 10 to 10.5
- B. 11 to 11.5
- C. 12.5 to 13
- D. 14 to 14.5
Correct Answer: A
Rationale: The obstetric conjugate is approximately 1.5 to 2 cm shorter than the diagonal conjugate.
For what is the decrease in estrogen and progesterone during the menstrual cycle responsible?
- A. Degeneration of the corpus luteum
- B. Ovulation
- C. Follicle maturation
- D. Shedding of the endometrium
Correct Answer: D
Rationale: The fall in estrogen and progesterone causes the endometrium to break down, resulting in menstruation.
What is true about fimbriae?
- A. They form the passageway for the sperm to meet the ovum.
- B. They are the site of fertilization.
- C. They are fingerlike projections that 'capture' the ovum.
- D. They propel the egg through the fallopian tube.
Correct Answer: C
Rationale: Fimbriae are the fingerlike projections from the infundibulum that 'capture' the ovum at ovulation and conduct it into the fallopian tube.