Somatosensory area I largest representation is for
Coical areas for sensation from trunk and back are small, whereas large areas are concerned with impulses from hand and pas of mouth. And from the figure 11-4 it is evident that area for hand is more than face. Ref: Ganong&;s review of medical physiology; 23rd edition; pg:175
Arm
Leg
Back
Head
Nervous system