alleryStart learning →What is atmospheric pressure at sea level in millimetres of mercury?
A660 mm Hg
B860 mm Hg
C560 mm Hg
D760 mm Hg
Answer & Solution
Correct answer: D. 760 mm Hg
1. Atmospheric pressure is the force exerted by the gases surrounding a surface.
2. It can be written in atmospheres or in millimetres of mercury.
3. One atmosphere equals 760 mm Hg, which is the value at sea level.
4. So the fourth option is correct.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 22 "The Respiratory System", section 22.3 The Process of Breathing_
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