Exam 31: Reproduction and Development

Ovulation in females is triggered by

Which of the following is a method that ends an early pregnancy by causing the endometrium to slough off?

Sertoli cells in the testes secrete testosterone.

Which of the following is a gonad?

Protandry involves males changing into females.

How many sperm cells are produced for every one primary spermatocyte?

At birth,a human female's gametes are fully mature egg cells.

All of the following methods of birth control prevent fertilization of the ovum by sperm except

Sperm,together with the secretions from several other glands,is referred to as _____________.

During the third trimester of development,the major change that occurs in the growing unborn child is

In the developing embryo,blocks of mesoderm that give rise to muscles and vertebrae are called ________________.

When does the lining of the uterus complete its thickening to prepare for the implantation of a zygote?

A reproductive strategy in which one individual has both testes and ovaries is called

The part of the body that ultimately controls the female menstrual cycle is the

Which of the following encloses the embryo?

A polar body is a nonfunctional cell formed during egg formation.

Human sperm production takes place within the

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

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

The secondary oocyte does not complete the second meiotic division until