Fertilization Flashcards
1
Q
Where does fertilization happen?
A
In the Ampulla of the Uterine Tube.
2
Q
What is the role of semen?
A
To alkalize the pH of the vagina so the sperm can survive.
3
Q
What is capacitation?
A
The removal of some glycoproteins and plasma proteins from the plasma membrane.
ONLY CAPACITATED SPERM WILL BE ABLE TO FERTILAZE THE OOCYTE.
4
Q
What induces the release of Ca+2?
A
A cortical reaction (prevent spems from entering as hydrolizes the ZP3 receptors ) and the resumption of meiosis II.
5
Q
What is formed by day 3?
A
A Morula
5
Q
When is the early bastocyst formed?
A
By days 4-5.
5
Q
What the blastocyst needs to release so it can achieve implantation?
A
The zona pellucida.
5
Q
When does the late blastocyst start implantation?
A
By days 6-7
