Question

The blood in our body has the same pressure as atmospheric pressure.

• A. True
• B. False

Answer 1

The correct option is B False

1. Blood in our body exerts a slightly higher pressure from inside.
2. For something to stay in its shape, it seems obvious that it must have equal outside and inside pressure.
3. The atmospheric pressure is around $760$ mm of Hg, and the gauge pressure of blood is around 120-80 mm of Hg.
4. But the measurement device of blood pressure is also open to the atmosphere, so the maximum blood pressure is actually $760+120$ mm which is $880$ mm of Hg
5. So the blood pressure of the human body is slightly greater than the pressure of the atmosphere but not enough to have any major impact.

Hence, the given statement is true.