Exam 31: Reproduction and Development

The layer of cells called the endoderm in the developing embryo eventually gives rise to:

All birds practice internal fertilization,even though most male birds lack a penis.

During the follicular phase of the female menstrual cycle,estrogen is produced by the:

Which part of the sperm cell contains enzymes to help the sperm digest a pathway into the egg?

__________________ is the male sex hormone,responsible for secondary sexual characteristics.

The sexually transmitted diseases,_____ and _____,can cause pelvic inflammatory disease,in which fallopian tubes become scarred and blocked.

Human sperm production takes place within the:

In some frogs,the eggs develop in the stomach and the young frogs leave through their parent's mouth.

The developing embryo is termed a fetus at what stage?

What stage of embryonic development implants in the lining of the uterus?

Skeleton,muscles,blood vessels and the heart develop from which germ layer?

In a process called _______________,one female oocyte matures in the ovary and is released each month.

During which period of prenatal development is it especially critical not to consume alcohol and why?

In humans,how many ova are produced from one primary oocyte?

What is lanugo?

In the ________________ growth pattern,different parts of the body grow or cease growing at different times.

Sexual reproduction first evolved among the:

Which hormone,secreted by the embryo,is tested for in all pregnancy tests?

The corpus luteum secretes which hormone in great abundance to inhibit FSH and to build up the lining of the uterus?

Which of the following methods of birth control prevent embryo implantation in the uterine wall?