Fertilization Review

What happens to a significant portion of sperm after entering the vagina?

• They are immediately fertilized by an egg.

• They flow out of the vagina or die in its acidic environment.

• They are stored in the cervix for later release.

• They become hyperactive and swim directly to the uterus.

How does the cervical mucus change during ovulation to facilitate sperm passage?

• It becomes thicker to slow down sperm.

• It thins to a more watery consistency.

• It becomes more acidic to protect against bacteria.

• It closes completely to prevent sperm entry.

Which of the following factors pose a challenge to sperm survival and progression towards the egg within the female reproductive tract?

• Muscular uterine contractions.

• Immune system cells mistaking sperm for foreign invaders.

• Ciliary motion in the fallopian tube.

• All of the above.

What is the primary function of chromosome in a sperm cell during fertilization?

• To provide energy for swimming.

• To store the male genetic material.

• To release digestive enzymes that help penetrate the egg's outer layers.

• To attach the sperm to the uterine wall.