Lung+Contents

=Lung Contents= Approximate values :- Vital Capacity for an average Lung equals 5,000 cubic centimetres Resting or Tidal capacity equals 500 cubic centimetres Residual Air equals 1,500-1000 cubic centimetres Alveolar surface area is approximately 60 square yards 25 times greater than the surface area of the skin

Inspired Air Expired Air Alveolar O2 20.94 % 16.30 % 14.20 % C O2 0.04 % 4.00 % 5.50 % {Nitrogen 79.02 % 79.70 % 80.30 % + other Gasses }