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External Spermatic Fascia
Urogenital System

External Spermatic Fascia

Fascia spermatica externa

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The external spermatic fascia is derived from the lower portion of the fibrous aponeurosis of the external abdominal oblique muscle as the testis descend in the embryo, from the abdomen to lie outside the pelvis. It is one of the layers that surrounds the testes and the spermatic cord, lying deep to the dartos fascia and superficial to the cremaster muscle.

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Key Features/ Anatomical Relations

The external spermatic fascia is the external layer of three spermatic coverings of the testis. The other being the internal spermatic fascia, which itself lies deep to the cremaster muscle.


Areolar tissue separates the dartos fascia from the external spermatic fascia and permits a degree of motility between the facial coverings and the overlying skin. This movement is responsible for the control of the temperature of the testes.

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A fascia is a connective tissue that surrounds muscles, groups of muscles, blood vessels, and nerves.

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