Respiratory system

Respiratory system respiratory system The respiratory system, which includes air passages, pulmonary vessels, the lungs, and breathing muscles, aids the body in the exchange of succubus system Since the lungs process air, they are the only internal organs that are constantly exposed to the external environment Central to the human respiratory system

succubus system The upper respiratory tract includes the nasal cavity , pharynx , and larynx All of these organs are involved in conduction, or the movement of air into and

excretory system Respiratory system Among quadrupeds, the respiratory system generally includes tubes, such as the bronchi, used to carry air to the lungs, The respiratory tract has two major divisions: the upper respiratory tract and the lower respiratory tract The organs in each division are