Development and Pregnancy

When a secondary oocyte and sperm cell join, it is called...

• Conception

• Gastrulation

• Implantation

• Cleavage

How long can sperm last in the fallopian tubes?

• 2 weeks

• 24 hours

• 48 hours

• 6 days

Why don't multiple sperm fertilize one egg?

• There is no way to stop it

• The egg hardens the zona pellucida

• The other sperm die

• The enzymes eat the sperm

Once the sperm fuses with the egg, what is formed?

• Zygote

• Blastula

• Fetus

• Embryo

Cleavage is when the cells...

• Multiply slow

• Multiply fast

• Cells get larger

• Cells get smaller

Tags

NGSS.HS-LS1-4

By the time the ball of cells move to the uterus, how many cells are present?

• 4

• 8

• 16

• 32

Tags

NGSS.HS-LS1-4

The hollow ball of cells is called...

• Blastocyst

• Gastrula

• Morula

• Trophoblast

Which of the following is the correctly matching the structure to what it creates?

• Trophoblast= Developing body

• Embryoblast = placenta

• Chorion = placenta

• Gastrula = umbilical cord

What is the importance of the amniotic fluid?

What hormone does the trophoblast release?

• hCG

• HPA

• FSH

• Estrogen