penetration of cumulus oophorus
penetration of cumulus cells layer
exact
penetration of cumulus mass
exact
The infiltration by sperm of the cumulus oophorus to reach the oocyte. The process involves digestive enzymes from a modified lysosome called the acrosome, situated at the head of the sperm.
GO:0048609
multicellular organismal reproductive process
is_a
GO:0007338
single fertilization
part_of