Fertilization And Clevage Quiz Flashcards
What are the functions of the zona pellucida of the oocyte?
Prevent polyspermy
Facilitate sperm attachment by its receptors
Protection
A person may be called oligospermic if his semen contains less than ………. Sperms
20 million sperm/ml
The process of fertilization last for how many hours?
24 hours
The second polar body is released from the mature oocyte during which of the following events?
When the sperm penetrates it
What is cleavage?
A process of repeated mitotic divisions of the zygote resulting in rapid increase in the number of cells.
When the developing human reaches 16 cell stage of compact blastomere it is called?
Morula
The result of fertilization include?
Restoration of diploidy
Initiation of cleavage
Sex determination of the embryo
On the zona pellucida sperm receptor activity is primarily associated with the glycoproteins.
zp3
The changes associated with acrosome reaction are associated with the release of which if the following enzymes?
Hyaluronidase and acrosin
Which are associated with reproduction?
ICSI
IVF
GIFT
Which is determined as one of the largest human cells?
Ovum
What contributes to the composition of seminal plasma
Secretion from the bulbourethral glands
Prostatic secretion
Secretion from seminal vesicles.
What are the step involved in the maturation and activation of sperm
Ascension to the ovary,
storage in the epididymis,
acrosome reaction
By the fifth day the morula enters the uterus and develops a cavity, by this stage the structure is termed as?
Blastocyst
The first form of a human being formed by fusion of two haploid gametes is known as
Zygote
