NEET PG DENTAL EXAM

EMBRYOLOGY

FERTILISATION EARLY DEVELOPMENT OF EMBRYO AND IMPLANTATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When a fertilized egg divides and forms a ball of cells, it is known as ____
A
a nucleus
B
a fetus
C
a zygote
D
an embryo
Explanation: 

Detailed explanation-1: -By the fifth or sixth day, the fertilized egg is known as a blastocyst-a rapidly dividing ball of cells. The inner group of cells will become the embryo. The outer group will become the cells that nourish and protect it.

Detailed explanation-2: -Zygote: The fertilized egg is called as a zygote. Zygote is an initial stage in baby development. It is also known as fertilized ovum formed from the union of male and the egg cells.

Detailed explanation-3: -When a fertilized egg has implanted in the uterus, the group of cells that will become a baby is called an embryo. A developing, fertilized egg is known by several names within the first 2 weeks after conception, including zygote, morula (day 4), and blastocyst (day 5).

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