Chapter 46 Review: Animal Reproduction
The placenta is formed by tissues from the ________ and the ________ .
blastocyst and zygote
In humans, the male gonad is
Menstrual flow is the loss of
follicles from the ovary.
the corpus luteum from the uterus.
e[ithelial cells from the vagina.
sperm from the oviduct.
Sperm develop from stem cells called
In humans, eggs are produced in the
The fusion of male and female gametes form a fertilized egg called a(n)