Fertilization Interactive Video

What helps some sperm survive the acidic environment of the vagina?

• Their strong tails

• Protective elements in the surrounding fluid

• The rapid movement through the cervix

• The alkaline nature of the vagina

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

• It becomes thicker and more viscous

• It becomes more acidic

• It thins to a more watery consistency

• It forms a barrier to prevent sperm entry

What challenge do sperm face in the fallopian tube due to the action of cilia?

• They are pushed back towards the uterus

• They must swim against the motion of the cilia

• They are trapped by the cilia and die

• The cilia guide them directly to the egg

What happens to the egg after the first sperm successfully attaches to its membrane?

• It releases chemicals to attract more sperm

• It undergoes changes to prevent other sperm from entering

• It immediately begins cell division

• It moves away from the remaining sperm