Doubt by

why does an old man has a higher dead space than an old woman? plz reply fast


Answer by

Do you mean that why life span of man is less than that of woman?

Answer by

Dead space is the volume occupied by the gas which does not participate in gas exchange in the lungs. There are different types of dead space like anatomical dead space, physiological dead space, alveolar dead space and apparatus dead space.
In old man, there is low supply of blood to lungs than woman and hence, they have high dead space.

Low supply of blood leads to carrying of less air (oxygen). So as increase in dead space.