Question

ory quiz 1 Saved Why is the composition of alveolar air different from that of the atmosphere? Essay Toolbar navigation 02:27:12 BI y SE 31 7 15 AA-

Answer 1

1. The composition of alveolar air is different from atmospheric air for the following reasons:

The inspired air is devoid of water vapor but during its passage through the respiratory tract water vapor is added. This results in diminishing the space available for other gases in the alveolar air.

Only a small proportion of inspired air is replaced by atmospheric air that is being inspired

the alveolar air is poorer in oxygen because there is a continuous absorption of oxygen from the alveolar air by pulmonary venous blood

the alveolar air is richer in carbon dioxide because the pulmonary venous blood adds carbon dioxide to alveolar air

2.

Correctly label the components of the upper respiratory tract. Septal cartilage Vomer Perpendicular plate perpendicular plate septal cartilage vomer nasopharynx oropharynx laryngopharynx Oropharynx Nasopharynx Laryngopharynx Reset Zoom