Catégories : Tous - skeleton - development - organs - brain

par Luz wu Il y a 2 années

68

the semsters to devolping a fetus

During human fetal development, the process is divided into three trimesters, each characterized by significant growth and changes. In the first trimester, the blastocyst implants into the uterine lining, initiating nutrient reception.

the semsters to devolping a fetus

the semsters to devolping a fetus

Second sememster

devolpement for females and males fetus
females, ovarian folliclesa begin to form
males, prostate gland begin forming
the brain contiunes with devolping
liver and pancreas begin fuctioning
The fetus also starts to devlop form urine and discharing aminiotic fluid
when bone's start to replace the cartiage and start to form an early skeleton

thrid trimester

Finally, the amniotic sac and the fetus breaks and that leads to contraction in the uterus which causes the baby to be pushed out
the brain starrts releasing hormones, that triggers involuntary movement that begins labor
the body begins storing nutrients and minerals suc as calcium and phosphorus
the eyelids starts to blink
there lungs and organs continues to mature, preparing life for outside
the mass of the fetus begin doubling

first sememster

After 3 months the tissues and organs are developed.
Neurulation the start to developing the nervous system.
Gastrulation us where cells divides into 3 cell layers call Ectoderm, Mesoderm and Endoderm.
A.Ectoderm develop the skin and the nervous system

B. Mesoderm forms the body’s internal structures such as muscles, bones, blood cells and reproductive organs.

the blastcyst first implants itself the uterline lining and that's where it starts recieving nutrients.