endonuclear canal
A membrane-bound structure present in the nucleus of a spermatozoon. There is variation in the number of endonuclear canals between sperm of different organisms, and some species lack these structures altogether. The endonuclear canal may provide a supporting role for the sperm nucleus, and originates during spermiogenesis from an invagination of the nuclear envelope.
GO:0110165
cellular anatomical structure
is_a
GO:0001673
male germ cell nucleus
part_of