Transection of medullary pyramids results in

(B) Positive Babinski sign > Transection of brainstem at supoerior border of pons result in marked spasticity & decerebrate rigidity> Forced grasping is a primitive reflex indicating frontal lobe lesion.> The corticospinal and corticobulbar system is primary pathway for initiation of skilled voluntary movements.> Lesions of ventral corticospinal tracts produce axial muscle deficits, causing of difficulty with balance, walking and climbing.> Damage to lateral corticospinal tract in humans produces the 'Babinski sign' dorsi flexion of great toe and fanning of the other toes when the lateral aspect of sole of foot is scratched.> Except in infancy, the normal response to this stimulation is plantar flexion in all toes.> Babinski sign is believed to be a flexor withdrawal reflex, that is normally held in check by lateral corticospinal system