Page 813 - Atlas of Histology with Functional Correlations

SECTION 1 Testis

Consists of two testes that contain spermatogenic cells, which produce sperm

Numerous excurrent ducts move sperm for storage and maturation into
ductus epididymis
During ejaculation, sperm leave system via ductus (vas) deferens and penile
urethra
Accessory glands include prostate, seminal vesicles, and bulbourethral glands

SCROTUM

Testes located outside the body cavity in scrotum whose temperature is 2°C
to 3°C lower than the body temperature
Lower temperature in scrotum because of sweat evaporation and

pampiniform plexus
Countercurrent heat-exchange mechanism cools arterial blood as it enters the
testes

TESTES

Thick connective tissue tunica albuginea surrounds testes and forms
mediastinum testis

Thin connective tissue septa from mediastinum testis separate testis into
testicular lobules
Testicular lobules contain coiled seminiferous tubules lined with germinal
epithelium

Germinal epithelium contains spermatogenic cells and Sertoli (supportive)
cells
Between seminiferous tubules are testosterone-secreting interstitial cells (of
Leydig)

FORMATION OF SPERM:

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