Cremaster muscle is supplied by
Correct Answer: Genital branch of genitofemoral nerve
Description: Ans. a (Genital branch of genito-femoral nerve). (Ref. BD Chaurasia, Human Anatomy Vol. II 3rd ed. 172)CREMASTER# Cremaster Muscle consist of muscle fasciculi embedded in the cremasteric facia.# Fasciculi form loop that are attached laterally to inguinal ligament & medially to pubic tubercle, pubic crest, the conjoint lendon.# It is fully developed only in male.# It is supplied by Genital branch of the genitofemoral nereve (LI).# Its action is to suspend testis & can elevate it.# It also closes superficial inguinal ring by 'ball valve' mechanism when intraabdominal pressure is raised.# In UMN lesions above segment LI, Cremaster reflex is lost.
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