Abdomen, Pelvis & Perineum
Needle prick of scrotum causes contraction due to (LQ)
|B||Internal spermatic fascia|
|D||External spermatic fascia|
• The dartos is a layer of smooth muscular fiber outside the external spermatic fascia but below the skin
• The tunica dartos acts to regulate the temperature of the testicles, which promotes spermatogenesis. It does this by expanding or contracting to wrinkle the scrotal skin.
• The dartos muscle works in conjunction with the cremaster muscle to elevate the testis but should not be confused with the cremasteric reflex