The normal atmospheric pressure is 760 mm of Hg. But the normal human blood pressure is around 120/80 mm only. In that case how equilibrium of our body is achieved? For any vessel to retain its original shape its inside pressure and outside pressure should remain equal. If the outside pressure exceeds the vessel will be crushed inward and if the inside one exceeds it will blow up. In the case of our body, assuming it as vessel, how the pressure of atmosphere which is nearly six times higher than the blood pressure inside, could not crush the body inward? Are there any other inward forces make up for the rest in order to counteract the atmospheric pressure? Also why do we not feel the atmospheric pressure acting on our body surface at all?