Breathing at Higher Altitudes

Breathing at Higher Altitudes

Introduction

The process of breathing occurs due to the differences in the pressure of air in the thorax as compared with the external environment. When an individual inhales the air by nostrils, the intercostal muscles of the body and the diaphragm contracts and in return of this contraction, the chest cavity becomes expanded. The diaphragm of the body gets flattens, and it moves downwards. Furthermore, the intercostal muscles of the body help in the outward and inward movement of the ribcage. The increase in size of the ribcage reduces the internal air pressure and the ...