1. BABY, BABY,
BABY, OHHHH!~
(Human
Development)
By Lavine Von

2. What is human development?
 Human development is the process
between fertilization to birth.
 During human development, the embryo
goes through 3 trimesters of development.

3. Craftyjoe / FreeDigitalPhotos.net
1st Trimester
The first 3 months of a baby’s development.

4. 1st Month
 Fertilized
egg begins to split into stem cells
to create different parts for life.
 Blood cells take shape & circulation begins.
 The, placenta, a round, flat organ,
transfers nutrients and wastes in and out
of the baby.
 Basic face features, eyes, mouth, lower
jaw, throat starts to develop.

5. 2nd Month
 Brain, digestive track, and sensory organs
begin to develop.
 Arms, legs, fingers, toes ears, and eyes
start to develop.
Euthmen @ Flickr ->

6. 3rd Month
 Baby has a basic, recognizable shape.
 Teeth begin to form.
 Reproductive organs begin to develop.
 Circulatory and urinary systems begin to
function, liver produces bile.
 Chance of miscarriage drops.

7. 2nd Trimester
4th – 6th Baby develops movement.

8. 4th Month
 Eyelids,eyebrows, eyelashes, nails, and
hair are formed.
 Teeth and bones become more hard.
 Nervous system starts to function.
 Reproductive organs fully developed.

9. 5th Month
 Hair
forms on baby’s head, shoulders, and
back.
 Muscles begin to develop.
Patrimonio | Dreamstime.com

10. 6th Month
 Baby is more responsive.
 Skin a reddish color, wrinkled, with veins
visible.

11. 3rd Trimester
7th – 9th month. Baby can survive out of its mother.

12. 7th Month
 Fatstarts going into baby.
 Baby’s hearing is developed.
 More movement.
 More responses to light, sound, and pain.
David Castillo Dominici / FreeDigitalPhotos.net

13. 8th Month
 Maturity and body fat reveres continue.
 Baby’s brain is rapidly developing.
 Internal organ systems developed for
most part.
 Lungs may be immature.
smokedsalmon / FreeDigitalPhotos.net

14. 9th Month
 Lungsare nearly fully developed.
 Baby’s reflexes are coordinated:
 Can blink, close the eyes, turn the head,
grasp firmly, and respond to touch.
 Baby’s position changes for delivery.
Clare Bloomfield / FreeDigitalPhotos.net