BONE
OSSIFICATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
straight after the fertilisation of an egg
|
|
|
4 months after the fertilisation of an egg
|
|
|
6 weeks after the fertilisation of an egg
|
|
|
6 months after birth
|
Detailed explanation-1: -About 6 days after fertilization, the blastocyst attaches to the lining of the uterus, usually near the top. This process, called implantation, is completed by day 9 or 10. The wall of the blastocyst is one cell thick except in one area, where it is three to four cells thick.
Detailed explanation-2: -Week 4: Implantation The rapidly dividing ball of cells-now known as a blastocyst-has begun to burrow into the uterine lining (endometrium). This process is called implantation. Within the blastocyst, the inner group of cells will become the embryo.
Detailed explanation-3: -Sperm Capacitation. Sperm-Zona Pellucida Binding. The Acrosome Reaction. Penetration of the Zona Pellucida. Sperm-Oocyte Binding. Egg Activation and the Cortical Reaction. The Zona Reaction. Post-fertilization Events. 01-Apr-2000