During a physical examination of a 35-year-old man with a spinal cord injury, the neurologist lightly strokes the right upper medial side of the thigh to test the integrity of the L1-2 spinal cord segments. He notes the cremasteric reflex is absent. Which of the following nerves carries the efferent limb of this reflex arc?

(A) Iliohypogastric
(B) Genital branch of the genitofemoral
(C) Femoral branch of the genitofemoral
(D) Femoral
(E) Ilioinguinal


Ans: (B) Genital branch of the genitofemoral

Anatomy & Physiology

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