Biology of Disease

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Figure 7.35 (A) Schematic of a testis. (B) Overview of spermatogenensis. (C) Schematic of a

sperm.See text for details.

Head

Tail

Middle

piece

Acrosome

Mitochondria

Nucleus

Spermatid

(haploid)

Secondary spermatocyte

(haploid)

Primary spermatocyte

(diploid)

Spermatogonium

(diploid)

Sertoli cell

Sperm cell

(haploid)

Nucleus of

Sertoli cell

Epididymis

Vas deferens

Uncoiled seminiferous tubule

A)

B)

C)

Testis