The stage in the respiration cycle in which air is taken in to the lungs. In a normal respiratory cycle inhalation takes longer than the exhalation phase; if this pattern is reversed it might suggest the individual is suffering from a pathological...

Inhalation (also known as inspiration) is the movement of air from the external environment, through the air ways, into the alveoli during breathing. Inhalation begins with the onset of contraction of the diaphragm, which results in expansion of the...