Fertilization, STDs&Contraceptive Methods

Activation of digestive enzymes in this structure allows sperm to burrow through the corona radiata.

• Acrosome

• Flagella

• Head

• Midpiece

How many sperm can fertilize a single egg?

• 1

• 2

• Unlimited

• Varies

What will happen to the first sperm that comes into contact with the egg membrane?

• Their membranes will fuse and the sperm is pulled inside the egg

• Their sperm membrane will become glued to the outside of the egg and remain there

• Their sperm's DNA will be sucked inside the cell while the rest of the sperm will fall off of the egg's surface

• Varies

Why can't multiple sperm fertilize an egg?

• The egg produces chemicals that push other sperm away from the egg

• The egg cell membrane changes preventing sperm from attaching to it

• The zona pellucida hardens trapping sperm inside

• The zona pellucida hardens so no more sperm can enter

After the sperm has fused with the egg and entered, what events take place?

• The pronuleus of the male and female fuse completing the process of fertilization

• The pronuleus of the male and female separate completing the process of fertilization

• Cilia pull zygote towards infundibulum

• Cilia pull sperm towards infundibulum

What is the third step of fertilization?

• Fusion of Sperm and Egg Membranes
• Cortical Reaction
• Acrosomal Reaction
• Organogenesis

The part of the sperm highlighted in red is called the?

• Midbody

• Midpiece

• Middle

• Body

In what order does sperm travel through the female reproductive system?

• Vagina > Uterus > Cervix > Fallopian Tubes

• Vagina > Urethra > Cervix > Fallopian Tubes

• Cervix > Vagina > Uterus > Fallopian Tubes

• Vagina > Cervix > Uterus > Fallopian Tubes

• Vagina > Cervix > Urethra > Fallopian Tubes

Acidic environment of female reproductive system

• Factor that HELP sperm get to the ovum

• Factor that PREVENT sperm get to the ovum

Cervical mucus

• Factor that HELP sperm get to the ovum

• Factor that PREVENT sperm get to the ovum