Spermatogenesis & Oogenesis

1. Gametogenesis
• Gametes develop
in the gonads (sex
cells)
• Spermatogenesis
• Oogenesis

2. •Their are 2
types of
gametogenesis

3. Spermatogenesis
• Production of sperm
in the testes
• Produce 4 sperm
from one cell
• Meiosis

4. Male Reproductive System

5. Oogenesis
• Production of eggs in
the ovary.
• Produce 4 eggs by
meiosis
• One egg cells is
function
• Three egg cells are
nonfunctional
• The are known as
polar bodies

6. Female Reproductive System
Sperm Enters
the vagina 1st
Sperm must
pass through
the uterus
2nd
Lastly the
sperm and
egg meet
here for
fertilization

7. Oviduct
Fertilization occurs here

8. Zygote
• Zygote is a fertilized
egg.
• A fertilized egg
becomes an embryo
as soon as the first
cleavage occurs.