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Anatomy and Physiology of Male Reproduction
Hormonal Considerations Testicular Anatomy Seminiferous Tubules the Epididymis
Seminiferous Tubules ▼ Straight Tubules ▼ Rete Testis ▼ Efferent Ductules ▼ Epididymis ▼ Vas Deferens ▼ Urethra Compared to other species, human males have relatively poor sperm producing capacity and human testicular function is very sensitive to a wide variety of environmental insults.
This may be related to the human (upright) posture and hydrostatic pressure on venous testicular outflow, or other unknown factors, but it is necessary for clinicians to be aware of the high incidence of subfertility in men.
Perhaps it is a reflection of the incredible ability of humans to adapt the environment to promote their own survival or the expectation that fertility should be nearly spontaneous, but many human couples seek evaluation for infertility.
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