Question

Explain the terms

a. Morula

b. Cleavage

c. Spermiation

d. Implantation

Answer 1

a. Morula: a solid ball of cells resulting from division of a fertilized ovum, and from which a blastula is formed.
b. Cleavage: cell division, especially of a fertilized egg cell.
c. Spermiation: Spermiation is the process by which mature spermatids are released from Sertoli cells into the seminiferous tubule lumen prior to their passage to the epididymis.
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d. Implantation:  the attachment of the fertilized egg or blastocyst to the wall of the uterus at the start of pregnancy.

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