<prompt> Root value of cremastric reflex?L1-L2L2-L3S1-S2L4-L5  <response>: ANS. A Important dermatomesCl-No sensory supplyC2-OcciputC5-Shoulder region deltoidC7-Middle finger areaT2T3-AxillaT7-EpigastriumT10-UmblicusT12-Pubic symphysisL3-KneeL5-Outer aspect of legS1-Lateral aspect of sole walking on S1S3, S4, S5-Around the anus sitting on S3,4,5 Important spinal segments to rememberC5-Abduction of shoulderC6-Flexion of elbowC7-Extension of elbowC8-Wrist flexion and extensionT1-Small muscles of handL1-Flexion of hipL2-Adduction of hipL3-Extension of kneeL4-Dorsiflexion of ankle and inversion of footL5-Eversion of footS1-Plantar flexion of ankleS2, 3-Small muscles of footL4, L5-Abduction of hipL5, SI-Extension of hip and flexion of kneeL5-Extensor digitorum hallucisS1-Flexor digitorum hallucis Root value of reflexesSuperficial reflexesConjunctival and corneal reflex: Trigeminal ophthalmic divisionSuperficial abdominal reflex: T7-T12 spinal segmentsAnal reflex: S2, 3, 4Bulbocavernous reflex: S3, 4 pudendal nervePlantar reflex: L5, S1Cremastric reflex: L1, L2 ilioinguinal nerve--afferent and genitofemoral nerve--efferent.Deep reflexesBiceps reflex: C5, 6 musculocutaneous nerveSupinator reflex: C5, 6 radial nerveTriceps reflex: C6, 7 radial nerveKnee jerk: L2 ,3, 4 femoral nerveAnkle jerk: SI, 2 spinal segments 