1. Reproductive anatomy & Fetal development
Team 4
Period 5

2. Female reproductive system

3. Male reproductive system

4. Gametes production
Female gametes (eggs)
Male gametes (sperm)

5. Implantation Fertilized egg is a zygote
Divides till a hollow ball called a blastocyst forms
Division continues, three cell layers form
Ectoderm, Mesoderm, Endoderm
Structures develop into embryo

6. Embryonic membranes

7. First Trimester (weeks 1-12)
Differentiation begins
Considered a fetus at 9 weeks
Limbs, Fingers & toes begin to form
Heart beat at week 5
Bronchi start to develop
External sex organs
Cerebral hemispheres of brain begin to form
Heart, intestines, pancreas, kidneys, & liver form

8. Second trimester (weeks 13-27)
Joints & bones form
Movements can be felt
Sleep cycles regulate
Rapid brain growth
Eyes open and blink
Lungs strengthen
Urine produced

9. Third Trimester (weeks 28-40)
Fetus responds to stimuli
Eyes closed during sleep; Dreams
Body and scalp hair grows in
Bones harden and grow
Synapses form between neurons
Fetus turns head down

10. Trimester activity Eyes open and blink Heart forms
Heart beat detected (weeks?)
Fetus turns head down
Lungs strengthen and fetus “breaths” amniotic fluid
Bones form
Considered fetus (weeks?)
Sex organs develop
Brain begins to form
Body & scalp hair grows