Seminiferous tubule
Epithelium cells divide endlessly by
mitosis
E Spermatogonium
Primary spermatocyte (diploid cells
grow larger)
g
i
Each carry out
Spermatid mitosis to
0
produce two
secondary
7M
Each secondary
carry out mitosis
Spermatids are
to produce
I
associated with nurse
spermatids
cells (Sertoli cells)
Help spermatids to
Sperm detach from develop into spermatozoa
Sertoli cells and are
carried out of the testis
y uid in the centre of
seminiferous tubule
Sperm cell diagram
Acrosome Haploid nucleus
Plasma membrane
Helical mitochondria
Centriole
_I
Microtubules
Protein bres to
strengthen the tail
fi