The respiratory system.
Oxygen rich air enters the body through the lungs.
Through your mouth and nose
Oxygen enters our body through the process of respiration. When we inhale, air containing oxygen enters our lungs. The oxygen then diffuses from the air sacs in the lungs into the bloodstream, where it is carried by red blood cells to tissues throughout the body.
mouth and nose
Oxygen (O2) enters your body through breathing air, which contains oxygen in it. This oxygen goes into your lungs where it is put into the bloodstream, supplied to cells in your body, returned to the lungs as carbon dioxide (CO2), and exhaled through the lungs.
Oxygen enters your body through the lungs during the process of breathing. The air you inhale contains oxygen, which is then absorbed into the bloodstream in the lungs and transported to cells throughout the body.
Oxygen enters the body through the respiratory system, specifically through the process of inhalation. It is taken in through the nose or mouth, travels down the trachea, and enters the lungs where it is exchanged with carbon dioxide.
Oxygen enters the blood from the lungs through the process of gas exchange where it diffuses into the bloodstream from the alveoli. In the lungs, carbon dioxide exits the bloodstream and is expelled from the body through exhalation.
Oxygen enters the body by travelling into the lungs, it then diffuses through the alveoli cell wall into the body's biggest artery, the aorta.
The lungs are the organs where oxygen enters the body and carbon dioxide leaves it through the process of respiration. Oxygen is taken in when breathing and carbon dioxide is released when exhaling.
Oxygen enters the body through the respiratory system, specifically through the process of breathing. When we inhale, oxygen is taken in through the nose or mouth, travels down the trachea, and enters the lungs. In the lungs, oxygen is transferred to red blood cells in the bloodstream and carried to the cells throughout the body. The oxygen is then used in cellular respiration to produce energy for the body's functions.
Oxygen in the lungs and passes through the alveoli, small sacs which allow gas exchange, and enters the blood to be pumped throughout the body.