Diffusion only. The partial pressure of O2 is the sole driver.
Oxygen enters your blood stream in your lungs. Inside your lungs the air pipe branches into smaller pipes which branch a number of times eventually forming 'alveoli'. The great amount of braching increases the surface area so there is more area for oxygen excahnge to occur, making the process more efficient. In the alveoli the capillaries are very close to the surface, so close that the oxygen gas can move across the thin wall into the blood stream. This is facilitated by haemoglobin which attracts and bonds with oxygen molecules.
The circulatory system is responsible for supplying nutrients and oxygen to the cells. It does this by transporting blood, which carries these essential substances, throughout the body. Blood is pumped by the heart and circulated through blood vessels to deliver oxygen and nutrients to cells and tissues.
Oxygen enters the bloodstream through the lungs during the process of respiration. In the lungs, oxygen diffuses from the air sacs (alveoli) into the pulmonary capillaries, where it binds to hemoglobin in red blood cells. This oxygenated blood is then pumped to the rest of the body by the heart to deliver oxygen to tissues for cellular respiration.
When oxygen enters the body, it is carried to the cells by red blood cells. These red blood cells contain hemoglobin, a protein that binds to oxygen in the lungs and transports it to tissues throughout the body. Once oxygen-rich blood reaches the cells, it is able to participate in cellular respiration to produce energy.
The oxygen molecule is inhaled (breathed in) through the left nostril or the mouth and then goes down the trachea (windpipe) and into the bronchioles and into the alveoli (both are parts of the lung). Then the blood meets up with the oxygen molecules and turns it into oxygenated blood. This blood is fed into the blood stream and go down the arteries, then capillaries, then into the muscle where they help it work. The blood is deoxygenated and then the blood goes to the heart to be pumped round the body again and the oxygen is taken up the same way it came down and is exhaled. I hope this helped :)
blood
Oxygen enters the blood stream through the air sacs in you lungs.
In air breathing animals, oxygen enters the blood stream through the alveoli, tiny sacs in the lungs. In water breathing animals oxygen enters the blood stream through the gills.
dosent
Oxygen is brought into the blood stream by inhalation. Carbon dioxide moves out of the cells, into the blood, and taken to the lungs to be exhaled. Oxygen in, carbon dioxide out.
Blood carries and transfers oxygen and nutrients throughout the body.
monkeys
Hemoglobin is the protein responsible for transferring oxygen into the blood. It is found in red blood cells and binds to oxygen in the lungs, then releases it to tissues throughout the body.
Blood cells carry the oxygen through the blood stream to the other cells in the body.
The Lungs, Blood Stream.
all parts of the body
The blood stream.