Which of the following is a cause of secondary amenorrhea?
A. Decrease in the secretion of prolactin
B. Development of the corpus luteum
C. Contraction of the uterine tissues
D. Weight loss due to serious illness
E. Increase in the secretion of oxytoxin
Answer: D
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Ova have ____ chromosomes
a. thirteen c. forty-six b. twenty-three d. sixty-one
For men, a ________ involves making a small incision in the scrotal sac to reach the vas deferens, which are cut and then blocked at both ends.
A. hormonal implant B. vasectomy C. colonoscopy D. laparoscopy E. tubal ligation
Which of the following is an advantage of the side-to-side position?
A. It is the only position that results in clitoral stimulation for women. B. It is the best position for a man who wants to control his ejaculation. C. It is most suitable for couples who wish to increase their chances of conception. D. It is ideal for leisurely or prolonged intercourse.
Which of the following statements about in vitro fertilization (IVF) is true?
A. It can benefit women who cannot conceive because of blocked fallopian tubes. B. It precludes the possibility of freezing eggs that have been fertilized in vitro. C. It is not recommended for couples who want twins or triplets. D. It more likely to be successful if the mother has a body mass index (BMI) of over 30.