Fertilization.ppt in cattle and other domestc animal

fertilization

1. Acrosome Reaction
Acrosomal
contents
Outer acr.
membrane
Inner acr.
membrane
Nucleus
Fusion of plasma
& outer acr. membrane
Plasma
membrane
Release of acrosomal
contents (hyaluronidase
and acrosin)
Equatorial
segment
Before acrosome
reaction
During acrosome
reaction
After acrosome
reaction

2. Fertilization
Corona
radiata
Zona pellucida
Ovum
Acrosome with
enzymes Nucleus
Sperm cell nucleus
inside ovum

3. SEQUENCE OF EVENTS DURING HYPERACTIVATION,
CAPACITATION, AR AND FERTILIZATION
SUBSETS OF
SPERM
POPULATION
INITIAL
BINDING OF
SPERM WITH
ZP2
SPERM BINDING
WITH ZP3
SPERM
PENETRATION
ACROSOME
REACTION
FUSION OF TWO
MEMBRANES
3

4. 4

5. E
A
R
L
Y

E
M
B
R
Y
O
N
I
C

D
E
V
E
L
O
P
M
E
N
T
5