Choose the One Most Appropriate Answer for Each

Multiple Choice

Choose the one most appropriate answer for each.
-Leydig cells

A) Acts to trigger ovulation in females
B) Structures that secrete fructose-rich fluid used as sperm energy source
C) Forms as an outgrowth of the yolk sac; becomes part of umbilical cord and urinary bladder
D) A drug that causes severely deformed arms and legs in developing embryos
E) Sperm enter this coiled duct on its way to vas deferens
F) Opening between uterus and vagina
G) Organ that supplies the mammalian embryo/fetus with nutrients and removes wastes
H) Connects epididymis with ejaculatory duct
I) Hormone that stimulates smooth muscle contractions in male and female reproductive tracts
J) Cap over the head of a sperm; contains lytic enzymes to penetrate egg membranes
K) Inner cell mass plus trophoblast; attaches to uterine wall
L) Testosterone-secreting cells in the testis
M) Sensitive to sexual stimulation; develops from same embryonic tissues as does the penis in males
N) The uterine lining
O) Stimulates maturation of an ovarian follicle