This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Male Genital System, Subject name: Anatomy
[{'content': 'Cremastric muscle is supplied by? \nSelect and explain. \nA. Iliohypogastric nerve, B. Ilioinguinal nerve, C. Femoral nerve, D. Genitofemoral nerve', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. d (Genitofemoral nerve). (Ref. BD Chaurasia, Human Anatomy- Vol. II, 3rd ed., 61, 179)GENITOFEMORAL 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.', 'role': 'assistant'}]