Oxygen diffuses from red blood cells in the bloodstream into body tissues through capillaries. It moves from areas of higher concentration in the blood to areas of lower concentration in the tissues, where it is used for cellular respiration.
Oxygen passes out of the bloodstream into tissues where it is used for cellular respiration, the process that generates energy for cells. Oxygen is critical for the production of ATP, which is the main source of energy for the body.
Carbon dioxide is released from the bloodstream into the alveoli in the lungs, to be exhaled during expiration.
The tiny air sacs are called alveoli. Oxygen from the air enters the bloodstream through the walls of the alveoli, while carbon dioxide from the bloodstream is released into the air sacs to be exhaled.
The fetus is supplied with oxygen and nutrients through the placenta, which is connected to the mother's uterine wall. The mother's blood passes through the placenta, allowing oxygen and nutrients to pass from the mother's bloodstream to the fetus. Waste products from the fetus also pass through the placenta into the mother's bloodstream for elimination.
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.
Oxygen passes out of the bloodstream into tissues where it is used for cellular respiration, the process that generates energy for cells. Oxygen is critical for the production of ATP, which is the main source of energy for the body.
These are called the "alveoli".
Carbon dioxide is released from the bloodstream into the alveoli in the lungs, to be exhaled during expiration.
The tiny air sacs are called alveoli. Oxygen from the air enters the bloodstream through the walls of the alveoli, while carbon dioxide from the bloodstream is released into the air sacs to be exhaled.
The fetus is supplied with oxygen and nutrients through the placenta, which is connected to the mother's uterine wall. The mother's blood passes through the placenta, allowing oxygen and nutrients to pass from the mother's bloodstream to the fetus. Waste products from the fetus also pass through the placenta into the mother's bloodstream for elimination.
Gases pass through alveoli via the process of diffusion. Oxygen molecules move from the alveoli into the bloodstream, while carbon dioxide molecules move from the bloodstream into the alveoli to be exhaled. This gas exchange occurs due to the difference in concentration gradients of oxygen and carbon dioxide between the alveoli and the capillaries.
Your bloodstream can't store oxygen for an extended period; it just transports it from the lungs to where it is needed.
Oxygen is the gas that passes from the lungs to the bloodstream.
In the bloodstream
oxyhemoglobin
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 process is called diffusion. It is the movement of molecules from an area of higher concentration to an area of lower concentration, allowing oxygen to move into the bloodstream and carbon dioxide to move out of the bloodstream in the alveoli.