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Exchange of carbon-di-oxide for oxygen takes place between capillaries and tissues.The exchange of gases occur through diffusion.In Lungs, oxygen from inhaled air in the alveolar space moves into the RBCs in the capillaries and the carbon-di-oxide moves form the RBCs in the capillaries to the alveolar space which is exhaled during respiration.In other tissues, the Oxygen is given to the tissues and carbon-di-oxide is taken from the tissues into the blood.Many gases can be exchanged across the capillaries but the exchange of oxygen and carbon-di-oxide occurs normally in the body.
Capillaries connect the smallest branches of arteries and veins The walls of capillaries are just one cell thick. Capillaries therefore allow the exchange of molecules between the blood and the body's cells - molecules can diffuse across their walls. This exchange of molecules is not possible across the walls of other types of blood vessel.
the blood vessel which allows gas exchange to occur is the capillaries
capillaries
Capillaries. Since they are only once endothelial cell thick, they can exchange gas, nutrients, and waste across their membrane. Capillaries in the brain have endothelial cells close together to onyl allow a slecetive exchange of materials, while capillaries in the kidney or liver have gaps between the endothelial cells to allow the exchange of a lot of materials.
across the endothelial lining of capillaries!!
Across the alveoli and capillaries.
external respiration is the gas exchange between air in lungs and blood You need to clarify your question better. Diffusion is the process of oxygen exchange across capillary membranes between the alveoli in the lungs and the capillaries in the pumonary blood system. Simply put its just ventilation (breathing)
The primary function of the respiratory system is to exchange oxygen and carbon dioxide. Inhaled oxygen enters the lungs and reaches the alveoli. The layers of cells lining the alveoli and the surrounding capillaries are each only one cell thick and are in very close contact with each other. This barrier between air and blood averages about 1 micron (1/10,000 of a centimeter) in thickness. Oxygen passes quickly through this air-blood barrier into the blood in the capillaries. Similarly, carbon dioxide passes from the blood into the alveoli and is then exhaled.
Substances typically move across capillaries via diffusion.
The exchange of oxygen and carbon dioxide occurs through the mechanism of diffusion. The gases diffuse across the thin walls of the capillaries, both in the body tissues and in the capillaries surround the alveoli in the lungs.
Capillaries allow Glucose and oxygen to move out of the blood in the capillaries into interstitial fluid and into the cells. Fluid is exchanged between capillary blood and interstitial fluid.