When exercising, cells will need more oxygen and produce more carbon dioxide as a result of increased respiration. When blood reaches the lungs, a larger volume of air is needed to replace the ...

The process of respiration also releases energy in the form of heat. The heat is used to maintain the relatively high body temperature of mammals and birds.

Respiratory tract diseases are illnesses that affect components of the respiratory system, including the nasal passages, the bronchi and the lungs. They range from acute infections, such as ...

However, the structural and functional properties of the lung and airways do not change in response to repetitive physical activity and, in elite athletes, the pulmonary system may become a limiting ...