<prompt> Cremastric muscle is supplied by?Iliohypogastric nerveIlioinguinal nerveFemoral nerveGenitofemoral nerve  <response>: Ans. d Genitofemoral nerve. Ref. BD Chaurasia, Human Anatomy- Vol. II, 3rd ed., 61, 179GENITOFEMORAL NERVE L1, L2 Genitofemoral nerve originates from the upper part of the lumbar plexus of spinal nerves. The genitofemoral nerve is responsible for both efferent and afferent limbs of the cremasteric reflex. The ilioinguinal nerve L1 is also involved in the afferent limb of the reflex. It emerges on the anterior surface of the psoas major muscle and divides into two branches:- Femoral branch, or lumboinguinal nerve, supplies skin anterior to the upper part of femoral triangle- Genital branch: in males, it travels through the superficial inguinal ring, along with the spermatic cord, and supplies the cremaster muscle and the scrotal skin in females, it ends in the skin of the mons pubis and labia majora. 