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What is Root value of cremaster reflex is and explain in detail?
In Men, Cremaster muscle & cremaster fascia form middle/2nd covering of spermatic cord. This muscle & Its associated fascia are supplied by genital branch of GENITOFEMORAL NERVE(L1 L2) Contraction of this muscle & resulting elevation of testis can be stimulated by reflex arc Gently touching the skin at & around the anterior aspect of superior pa of thigh stimulates sensory fibers in femoral branch of genito-femoral N/ Ilio-Inguinal N. These fibers enter spinal cord at L1 At L1, Sensory fibers stimulate motor fibers carried in genital branch of genito-femoral N, which results in contraction of cremaster muscle & elevation of testis. Cremasteric reflex is more active in children, tending to diminish with age. As with many reflexes, it may be absent in ceain neurological disorders. Although, it can be used for testing spinal cord function at level L1 in men, Its clinical use is limited.