Scrotum and Coverings of Testis

Coverings of testis
Numbering from deep to superficial:
 * 1) Tunica vaginalis (visceral layer)/epiorchium
 * 2) Tunica vaginalis (parietal layer)/periorcium (from peritoneum)
 * 3) Internal spermatic fascia (from tranversalis fascia)
 * 4) Cremaster muscle and its fascia (from internal oblique muscle)
 * 5) External spermatic fascia (from external oblique muscle)
 * 6) Dartos fascia
 * 7) Skin

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 * Penis
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