Question

Explain the process of inspiration under normal conditions.​

Answer 1

AnSwer :-

$\bigstar$ The phrenic muscles of daiphragm contract and move downward towards abdomen and that increases the volume of the thoracic chamber in the anterio-posterior axis.

$\bigstar$ The contraction of external inter- costal muscles causes the ribs and the sternum to move upward and outwards; this causes an increase in the volume of the thoracic chamber in the dorso-ventral axis.

$\bigstar$ The overall increase in the volume of the thoracic cavity causes a similar increase in the pulmonary volume.

$\bigstar$ As a consequence, there is a decrease in the intra-pulmonary pressure, less than the atmospheric pressure and air rushes into the lungs.

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#sanvi....

Answer 2

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Inspiration is the process of taking air from the atmosphere into the lungs. It is done by creating a pressure gradient between the lungs and the atmosphere. This ultimately results in increase in the pulmonary volume. Due to this, intrapulmonary pressure becomes lesser than the atmospheric pressure.