Embryo Flashcards
1
Q
Embryonic Period (length) and why this time is important
A
Week 0-8 (first trimester).
Most embryonic issues occur during this time frame
2
Q
Zone Pellucida
A
glycoprotein meshwork underneat the corona radiata which surrounds the nucleus, plasma membrane, cytoplasm and pervitelline space
3
Q
Corona radiata
A
follecular cells that surround the human ovum
4
Q
Week 1: main events
A
fertilization, cleavage, blastocyst, inner cell mass and implantation
5
Q
Where does fertilization occur?
A
at the ampulla (located in the distal third of the uterine tube)
6
Q
Hyaluronidase
A
enzyme released by the acromosome of the sperm cell after contact with the ovum in order to penetrate the zona pellucida
