Gestation Life Sciences presentation.pptx

Presentation focusing on the gestation period of humans.

1. Duration: 10min LIFE SCIENCES GESTATION NV MABILA Click to open in Lifeliqe

2. GESTATION 5 min Gestation is the period of development during the carrying of an embryo, and later fetus, inside a viviparous animals. - Pregnancy

3. GESTATION 5 min

4. 1 ST TRIMESTER Main period of organogenesis Organogenesis: Is the development of body organs. Most changes for a mother and embryo. During the first 2-4 weeks the embryo obtains nutrients from the endometrium. . . . .

5. 1 ST TRIMESTER During the implantation the Blastocyst, the endometrium grows over the blastocyst. The blastocyst will be engulfed by the endometrium. . . . .

6. 1 ST TRIMESTER The outer layer of the blastocyst call t he TROPHOBLAST mingles with the endometrium and form a placenta. Blood from the embryo travel from to the placenta using the umbilical artery and returns using umbilical vein of the umbilical cord. The umbilical vein is thicker than the umbilical artery. . . . .

7. TWINS Genetical identical twins: Splitting of embryo during the 1 st month of development. Fraternal twins: The release of two eggs and each egg fertilized by a different sperm results to genetical different twins. All major structures are present by 8 weeks an embryo now called a fetus . . . . .

8. ACTIVITY: 30 SECONDS GROUP YOURSELVES IN TO TWO GROUPS