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Spermatozoa in Female Tract - Coggle Diagram
Spermatozoa in Female Tract
Sequence of events
Immediate transport
Cervix
Uterus
Oviduct
Fertilization
Spermatozoon penetrates oocyte
Male and female pronuclei form
Acrosome reaction
Capacitation completed
Hyperactive motility
Docking to oviductal cells
Capacitation initiated
Phagocytosis
Removal of nonmotile sperm
Removal of some abnormalities
Privileged pathways
Phagocytosis
Entrance into cervix
Retrograde loss
Transport
Rapid phase
Spermatozoa in oviducts a few minutes after copulation
Result of elevated tone and motility of muscularis of female tract
Sustained phase
Spermatozoa transported to oviducts in a trickle effect from cervix
Process of fertilization
Hyperactive motility
Binding to zona pellucida
Acrosomal reaction
Penetration of zona pellucida
Sperm-oocyte membrane fusion
Sperm engulfed
Decondensation of sperm nucleus
Formation of male pronucleus
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Reduction of disulfide crosslinks
Cortical reaction
Due to fusion protein
Release of acrosomal enzymes
Fusion of spermatozoal plasma membrane and outer acrosomal membrane
Vesiculation
Requires zona binding proteins
In oviduct
Artificial insemination
Transcervical
General
Intracervical
Sow
Intravaginal
Dogs and cats
