The contraction of the scrotum up toward the pelvis when the inner thigh is stimulated.
Retraction of the testis when the skin is stroked on the front inner side of the thigh.
In the realm of male anatomy, there exists a reflex known as the cremasteric reflex, whereby the cremaster muscle, enveloping the testes and the spermatic cord, contracts, causing the testicles to retract into the scrotum. This reflex serves a vital role, particularly in the assessment of young children, as it aids medical professionals in distinguishing between an undescended testicle and a hyperactive cremasteric reflex.