Inside the red blood cells, the iron has a great affinity for oxygen. It moves by passive diffusion from the alveoli in the lungs into the bloodstream where it binds to the iron groups in the haemoglobin in the red blood cells.
+++Osmosis
respiratory system
Oxygen is the substance that moves from the bloodstream to the air via the lungs during respiration. This process occurs in the alveoli of the lungs where oxygen is exchanged for carbon dioxide.
As blood moves through the lungs, oxygen is exchanged for carbon dioxide. Oxygen diffuses from the air in the lungs into the blood, increasing the oxygen level in the blood. Conversely, carbon dioxide diffuses from the blood into the air in the lungs, decreasing the carbon dioxide level in the blood.
Oxygen moves into the lungs where it is absorbed into the bloodstream through tiny air sacs called alveoli.
the oxygen releases carbon dioxide
Oxygen moves from the lungs into the bloodstream through a process called diffusion. This occurs at the alveoli, which are small air sacs in the lungs where oxygen and carbon dioxide are exchanged with the blood. Oxygen diffuses from an area of high concentration in the alveoli to an area of lower concentration in the blood, facilitated by the difference in partial pressures.
The questions leads towards which physiological important gases the blood contains.When the blood moves TO the lungs it has both CO2 (carbondioxide) and O2 (oxygen). However the level of oxygen is lower, and the level of CO2 is higher than with blood coming from the lungs.
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.
through respiratory membrane via diffusion
Oxygen is moving by simple diffusion. It is going from a higher level of oxygen (air) to lower (blood).
The respiratory system draws oxygen into the lungs. The circulatory system moves blood into the lungs to pick up the oxygen and then brings the oxygen to cells in the rest of the body.