Question 1
hCG stimulates which structure to secrete estrogen and progesterone?
◦ the zona pellucida
◦ the corona radiata
◦ the corpus luteum
◦ the ovum
◦ the placenta
Question 2
How many days after fertilization does the zygote become a ball of cells?
◦ five days
◦ four days
◦ one to two days
◦ six to eight days
◦ it depends on the age of the mother