The cornea in the eye does not receive oxygen from blood. Instead, it gets its oxygen directly from the air.
The lungs provide oxygen to cells by extracting oxygen from the air we breathe and delivering it to the blood. The blood then carries the oxygen to all cells in the body.
The pulmonary circulation is the organ system that exhibits this pattern. Low oxygen levels in the blood cause vasoconstriction in the pulmonary arteries, directing blood flow towards better oxygenated areas. Conversely, high oxygen levels trigger vasodilation, allowing for increased blood flow to areas that need less oxygen.
The blood in the pulmonary veins contains the highest concentration of oxygen since it has just been oxygenated in the lungs before returning to the heart to be pumped to the rest of the body.
The circulatory system (blood and vessels) transports oxygen and nutrients around the body. The heart furnishes the power to move the blood.
Oxygen is needed in blood to be transported to tissues throughout the body and used for cellular respiration, where it is essential in producing energy for the body. Without oxygen, cells would not be able to generate ATP, the energy currency of the body, leading to cellular dysfunction and ultimately, organ failure.
The brain consumes 40% of the oxygen in your blood.
The Lungs
the lung
the lung
heart
The lungs are responsible for taking in oxygen from the air we breathe and transferring it into the bloodstream. This occurs through the process of gas exchange in the lungs where oxygen moves into the blood vessels in exchange for carbon dioxide.
oxygen and nutrients
Veins
your lungs
The lungs provide oxygen to cells by extracting oxygen from the air we breathe and delivering it to the blood. The blood then carries the oxygen to all cells in the body.
Mostly arteries.
There are two organs, the lungs and the blood.