C H A P T E R 3 9
Introduction to the reproductive system
605
C H E C K Y O U R U N D E R S T A N D I N G
Answers to the questions in this chapter can be found in
Appendix A at the back of this book.
MULTIPLE CHOICE
Select the best answer to the following.
1.
In a non-pregnant woman, the levels of the sex
hormones fluctuate in a cyclical fashion until:
a.
all of the ova are depleted.
b.
the FSH and LH are depleted.
c.
the hypothalamus no longer senses FSH and LH.
d.
the hypothalamus becomes more sensitive to
androgens.
2.
A woman develops ova (or eggs):
a.
continually until menopause.
b.
during fetal life.
c.
until menopause.
d.
starting with puberty
3.
Control of the female sex hormones starts with the
release of GnRH from the hypothalamus. Because
of this, the cycling of these hormones may be
influenced by:
a.
body temperature.
b.
stress or emotional problems.
c.
age.
d.
androgen release.
4.
The rhythm method of birth control depends on the
effects of progesterone:
a.
to increase uterine motility.
b.
to decrease and thicken cervical secretions.
c.
to elevate body temperature.
d.
to depress appetite.
5.
The menstrual cycle:
a.
always repeats itself every 28 days.
b.
is associated with changing hormone levels.
c.
is necessary for a human sexual response.
d.
cannot occur if ovulation does not occur.
6.
In the male reproductive system:
a.
the seminiferous tubules produce sperm and
testosterone.
b.
the interstitial cells produce sperm.
c.
the seminiferous tubules produce sperm and the
interstitial cells produce testosterone.
d.
the interstitial cells produce sperm and
testosterone.
7.
Spring fever occurs as a result of increased light.
In males, this increase in light causes an increase in
the production of:
a.
inhibin.
b.
adrenal androgens.
c.
oestrogen.
d.
testosterone.
8.
The human sexual response depends on stimulation
of:
a.
the sympathetic nervous system.
b.
the parasympathetic nervous system.
c.
the hypothalamic sex drive centre.
d.
adrenal androgens.
MULTIPLE RESPONSE
Select all that apply.
1.
After teaching a group of students about the
effects of the various sex hormones, the instructor
determines that the teaching was successful when
the group identifies which of the following as related
to oestrogen?
a.
increased levels of high-density lipoproteins
b.
increased calcium density in the bone
c.
closing of the epiphyses
d.
development of a thick cervical plug
e.
increased body temperature
f.
triangle-shaped body hair distribution
2.
A group of students are reviewing material
in preparation for an examination on the sex
hormones. Which of the following, if identified by
the students as effects of testosterone, demonstrates
understanding of the information?
a.
thickening of skin and vocal cords
b.
development of a wide and flat pelvis
c.
development of facial hair
d.
glosure of the epiphyses
e.
increased haematocrit
f.
increased aggression
