During the formation of an embryo, the hollow ball of cells having a fluid-filled cavity is called a
A. neurula.
B. blastula.
C. gastrula.
D. blastocoel.
E. morula.
Answer: B
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Sperm mature and are stored in the epididymis
a. True b. False
What event occurs during ovulation?
The inguinal canal is located in the:a
abdominal wall. b. scrotum. c. epididymis. d. ejaculatory duct. e. vas deferens
The medication known as mifepristone, or RU-486, acts by
A. preventing an egg from maturing and being released-essentially a stronger regular birth control pill. B. killing sperm as they enter the female reproductive tract. C. destroying the embryo which in turn causes a spontaneous miscarriage. D. blocking the progesterone receptors of cells in the uterine lining and causes the loss of an implanted embryo. E. preventing development of a uterine lining.