respiratory system

respiratory system   Dan endocrine system

The respiratory system is the organs and other parts of your body involved in breathing, when you exchange oxygen and carbon dioxide

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 The major passages and structures of the upper respiratory tract include the nose or nostrils, nasal cavity, mouth, throat ,

ผลบอลสดgoal The main function of the respiratory system is to supply the blood with oxygen so the blood can deliver oxygen to all parts of the body The respiratory system The respiratory tract is the path of air from the nose to the lungs It is divided into two sections: Upper Respiratory Tract and the Lower Respiratory Tract