Question

Contraction of the inspiratory muscles reduces thoracic pressure and increases thoracic volume, what law is this?

a) Boyle's law
b) Charles's law
c) Archimedes' principle
d) Newton's second law

Answer 1

Contraction of the inspiratory muscles reduces thoracic pressure and increases thoracic volume. This is explained by Boyle's law, which states that the pressure of a gas is inversely proportional to its volume.

Step-by-step explanation:

Contraction of the inspiratory muscles reduces thoracic pressure and increases thoracic volume. This is known as Boyle's law. Boyle's law states that the pressure of a gas is inversely proportional to its volume. In the case of breathing, when the inspiratory muscles contract, the thoracic cavity expands, resulting in a decrease in pressure and an increase in volume. As a result, air rushes into the lungs to equalize the pressure.