Question

The air pressure inside our body is equal to the _ _ _ _ _?
(a) In internal pressure
(b) Atmospheric pressure
(c) Both (a) and (b)
(d) None of the above

Answer 1

Hint: They are the pressure within the atmosphere of Earth. They are also called barometric pressure. It is the force per unit area exerted by the entire body of air above the specified area.

Complete answer:
The air pressure within the body is similar to the atmospheric pressure. The atmosphere pressure within the body resists the muscular action of the heart keeping the fluid pressures slightly high (120/80 mm of Hg) this is often why one bleeds when cut, venous and lymph pressures are lower and are managed with muscular contractions. Air pressure within the lungs is controlled mostly by the diaphragm squeezes up compressing the lungs the upper than atmospheric pressure allows air to effuse of the lungs. The diaphragm moves downward decreasing the force on the lungs increasing their volume and lowering the pressure within the lungs below air pressure allowing air to flow into the lungs. We ourselves cannot force air in or out of our lungs so it's in our greatest interest to stay that diaphragm muscle in tip-top shape and keep our lungs as supple as possible.

Additional information:
Atmospheric pressure is caused by the gravity of the earth on the atmospheric gases above the surface and maybe a function of the mass of the earth, the radius of the surface, and therefore the amount and composition of the gases and their vertical distribution within the atmosphere. It’s altered through planetary rotation and local effects such as wind velocity, density variations because of temperature, and variations in composition.

So, the correct answer is ‘Atmospheric pressure’.

Note:
Atmospheric pressure is usually measured with a barometer (therefore the generally used synonym barometric pressure), which symbolizes the peak of a column of mercury that exactly balances the weight of the column of the atmosphere over the barometer. Earth's air pressure stumped level is approximately 1 atm.