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Mid (connecting) piece
Head
Acrosome
Plasma membrane
Nucleus
Centriole
Mitochondria
Terminal disc
Axial filament
Tail
End piece
Cell membrane
Nucleus
Nuclear vacuoles
Acrosome
Post-acrosomalsheath
Posterior ring
Connecting Piece
Centriole
Centriole
Equatorial segment
Redundantnuclearenvelope
Peri-acrosomal space
Sub-acrosomal space
SIDE VIEW
FRONT VIEW
Nuclear envelope
outer acrosome membrane
Mitochondrialsheath
Outer dense fibers
Axoneme
Axoneme
Post-acrosomal region
Central Pair