5.
____
induces labor if injected into a pregnant woman.
a. Oxytocin
b. Progesterone
c. Inhibin
d. Testosterone
6.
____
gives rise to three germ layers in the embryo.
a. Fertilization
b. Neurulation
c. Gastrulation
d. Morulation
7. The
_____
phase of the male sexual response is associated
with ejaculation.
a. excitement
b. plateau
c. orgasm
d. resolution
Use this figure to answer questions 8-10.
C
D
8. In which of the labeled organs do sperm mature?
a. A
c. C
b. B
d. D
9. The organ labeled B produces
a. LH
b. testosterone
c. FSH
d. GnRH
11. Which of the following events releases a hormone that res-
cues the corpus luteum?
a. capacitation
b. fertilization
c. gastrulation
d. implantation
12. Which of the following is part of a positive feedback mecha-
nism?
a. testosterone secretion
b. milk ejection
c. secretion of estrogens
d. inhibin secretion
Use this figure to answer questions 13-15.
C
13.
In which of the labeled stages would you find a blastocyst?
a. A
c. C
b. B
d. D
14. The cells pictured in part C
are most likely
_
a. oocytes
b. zygotes
c. morulas
d. blastocysts
15. In which labeled event do you find a zygote?
a. A
c. C
b. B
d. D
10.
Wave-like contractions propel the sperm through
a. A
c. C
b. B
d. D
THE PLANNER
1
Review your Chapter Planner on the chapter opener and
check off your completed work.
V
J
Self-Test 509
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