The primary function of the respiratory system is to provide oxygen to every part of the body through the process of inhaling oxygen and exhaling carbon dioxide. The respiratory system consists of tissues and organs insi... More »

The respiratory system consists of organs and structures used for breathing. The respiratory system supplies oxygen to cells and eliminates carbon dioxide from the body. More »

The respiratory system's structured pathways enable breathing by carrying oxygen to the lungs and filtering out harmful substances, explains WebMD. Respiratory organs also expel carbon dioxide from the body and transport... More »

The main function of the alveoli is the exchange of carbon dioxide for oxygen in the lungs. Alveoli are small air sacs of the respiratory system. For this gas exchange to occur, air must travel through different parts of... More » Science Human Anatomy

The purpose of respiration is to supply the body with oxygen and eliminate carbon dioxide. Oxygen is essential for cellular respiration as cells cannot exist in the absence of it. More »

Haemoglobin, also spelled hemoglobin, is part of the red blood cells and its main function is to transport oxygen from the lungs to the tissues, then transport carbon dioxide back to the lungs from the tissue. Each red b... More » Science Human Anatomy Blood

The major function of hemoglobin is to transport oxygen from the lungs to the body's tissues and then transport carbon dioxide out of the tissue back to the lungs. Each red blood cell contains approximately 280 million h... More »