Mahsulot tavsifi:

Respiration is the exchange of gases between an organism and its environment. In humans, the respiratory and circulatory systems cooperate in the transport of gases to the cells. Respiration includes two main processes: external respiration (gas exchange between the lungs and blood) and internal respiration (passing of gases from the blood to the tissues). The organs of the respiratory system include the nasal cavity, pharynx, larynx, trachea, bronchi, and lungs.