Most Sperm Cells Die in the Vagina When Entering the Female's

question 73

Multiple Choice

Most sperm cells die in the vagina when entering the female's body because

• A) the sperm cannot pass through the mucus.
• B) the female's reproductive tract is protected by digestive enzymes.
• C) of the low pH of the vagina.
• D) the sperm cells have not yet been activated to swim.
• E) macrophages from the female's immune system destroy all nonself cells.

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Definitions:

Germinal Period

The initial two weeks of prenatal development after conception, characterized by rapid cell division and the beginning of cell differentiation.

Fetal Stage

The fetal stage is the last stage of prenatal development, beginning in the ninth week of pregnancy and continuing until birth, characterized by rapid growth and maturation of organs and body systems.

Embryonic

Pertains to the earliest stage of development, typically before birth, often used in biology to describe the early stages of an organism's development.

Germinal

Pertaining to the earliest stage of development, particularly right after fertilization in organisms.