OUTCOMES 13.5, 13.8, 22.2, 22.3
1. What changes, if any, might occur in the secondary sex
characteristics of an adult male following removal of one
testis? Following removal of both testes? Following removal of
the prostate gland?
OUTCOMES 13.5, 13.8, 22.2, 22.3, 22.4, 22.5, 22.7
2. Understanding the causes of infertility can be valuable
in developing new birth control methods. Cite a type of
contraceptive based on each of the following causes of
infertility: (a) failure to ovulate due to a hormonal imbalance;
(b) a large ±
broid tumor that disturbs the uterine lining;
(c) endometrial tissue blocking uterine tubes; (d) low sperm
count (too few sperm per ejaculate).
OUTCOMES 13.5, 13.8, 22.4, 22.5
3. What effect would removal of an ovary have on a woman’s
reproductive cycles? What effect would removal of both
INTEGRATIVE ASSESSMENTS/CRITICAL THINKING
OUTCOMES 13.5, 13.8, 22.4, 22.5, 22.7
4. Does a tubal ligation cause a woman to enter menopause
prematurely? Why or why not?
5. Some men are unable to become fathers because their
spermatids do not mature into sperm. Injection of their
spermatids into their partner’s secondary oocytes sometimes
results in conception. A few men have fathered healthy babies
this way. Why would this procedure work with spermatids but
not with primary spermatocytes?
OUTCOMES 22.2, 22.3
6. As a male reaches adulthood, what will be the consequences if
his testes have remained undescended since birth? Why?
OUTCOMES 22.4, 22.5
7. Sometimes a sperm cell fertilizes a polar body rather than
a secondary oocyte. An embryo does not develop, and the
fertilized polar body degenerates. Why is the polar body
unable to support development of an embryo?
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