Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.



No description

ιтαly vєиєzιαиσ

on 8 June 2014

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Recyclable Prezi - USE FOR ALL OF THE PRESENTATIONS!

Johnny Lau
Karson Nguyen
Embryonic Development
Works Cited
What is Embryonic Development?
*The 8 weeks when the embryo is developing

*The embryo is a tiny body no bigger than the human thumb

The Zygote
* A fertilized egg that passes through the
fallopian tube

*In: - 24-36 hours it divides into 2
- 12 hours later it divides into 4

* Known as Cleavage

*At each stage, the cells become smaller,
gradually approching normal body cell size
The Morula
*Zygote divides several times into clusters of 16-32 cells

*3 days after fertilization, the Morula enters the uterine cavity.
The Blastocyst
*6 days after fertilization, the Cell cluster forms a hollow cavity

*Floats in uterus and lands in thick uterus lining (endometrium) after 48 hours

*Blastocyst burrows itself in endometrium
The Embryonic Disk
*Within endometrium, embryonic disk forms

*Embryonic disk seperates cell cluster into amniotic cavity (Sac that fills w/ liquid and folds over to cover the disk)

*The sac transports nutrients the embyro during the 2nd & 3rd weeks

*The Embyronic disk developments into 3 circular sheets (Ectoderm, Mesoderm, Endoderm) where the body structures will form from
Last few weeks of development
*The cells continue to divide into groups that become tissues and organs

*The brain + head forms 1st, the body forms 2nd, the arms form 3rd, and the legs form last

*After 8 weeks, the embyro is known as a fetus
Third week of development
Fourth week of development
Eighth week of development
*Neutral tube forms to become spinal cord

*Embryo is 2-3mm long
*Heart pulses and sends blood through vessels

*Intestines, liver, pancreas, lungs, and limbs begin to form

*Embryo is 4mm long
*Face and neck begin to take shape

*Back straightens

*Fingers + toes can be differentiated clearly

*Embryo starts to move

*Embryo is 25-30mm long
Full transcript