Lecture 2B Flashcards
Fertilization is the joining of two gametes to form a
Zygote
What are the two gametes
Secondary oocyte
Spermatozzon- sperm cell
Gametes are ______ cells
Haploid
The two haploid cells coming together form a
Single diploid cell
Fertilization usually occurs during the first ____ hours of ovulation
24 hours
What part of fallopian tube would fertilization occur
Ampullary
How does sperm get to follopian tubes
Flagella \
Maybe muscular contractions
What is around secondary oocyte
Protective shell called the corona radiata
When sperm digests the corona radiata, what does it bind to
Zona pellucida
Once the sperm fuses to the zona pellucida what occurs
The sperm head sloughed off exposing more enzymes
What the sperm releases more enzymes what happens to the zona pellucida
It becomes impenetrable to other sperm
The sperms pronucleus works towards the eggs
Pronucleus to join to form the zygote
Does the zygote divide before it implants ?
Yes
What is the reaction called of the endometrium thickening as a result of pregnancy
Decidual reaction
Zygote will develop into _____ once implanted
Embryo