You breathe in through your nostrils or mouth, which allows air to enter your respiratory system and reach your lungs where oxygen is absorbed into the bloodstream.
American Martens, like other mammals, breathe in oxygen through their lungs. They have specialized respiratory systems that allow them to extract oxygen from the air and deliver it to their body tissues through their bloodstream.
I wouldn't exactly characterize it as separating carbon dioxide and oxygen, however, I think the answer you are looking for is the lungs which takes up oxygen into the bloodstream and expels carbon dioxide out of the bloodstream into the lungs so we can breathe it out again.
Oxygen leaves the body through the process of respiration. During inhalation, oxygen is taken into the lungs and transferred to the bloodstream, where it is then distributed to cells in the body. As cells use oxygen for metabolic processes, carbon dioxide is produced and exchanged back through the bloodstream to the lungs, where it is exhaled out of the body.
Your nose and mouth.
Blood picks up oxygen and releases carbon dioxide in the lungs.
Blood picks up oxygen and releases carbon dioxide in the lungs.
In the bloodstream
Oxygen first enters your body through your respiratory system, specifically through your nose or mouth, where it is inhaled into your lungs. In the lungs, oxygen is transferred from the air you breathe into your bloodstream to be circulated throughout your body to provide energy to your cells.
The lungs diffuse oxygen into the bloodstream. Oxygen from the air we breathe is absorbed into the bloodstream through the walls of the alveoli in the lungs, where it is then carried by red blood cells to be delivered to the body's tissues.
The respiratory system.
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.
You breathe in through your nostrils or mouth, which allows air to enter your respiratory system and reach your lungs where oxygen is absorbed into the bloodstream.
American Martens, like other mammals, breathe in oxygen through their lungs. They have specialized respiratory systems that allow them to extract oxygen from the air and deliver it to their body tissues through their bloodstream.
The bloodstream is the roads, the railways, and the airports of the body. Everything that goes from one part of the body to another enters the bloodstream at some point.
Oxygen enters the body through the respiratory system, specifically through the lungs. Inhaled air travels through the trachea and into the lungs where it is diffused into the bloodstream through tiny air sacs called alveoli. The oxygen is then carried by red blood cells to various tissues and organs in the body.
Oxygen enters via the lungs.