i KNOW ONLY 2. They are : Carbon dioxide & excretory products
Substances exchanged through diffusion between blood and cells.So capillaries should be near to cells.
Capillary: A tiny blood vessel where substances are exchanged between the blood and the body cells.
Capillaries
There are only two substances found in between the blood cells and the capillaries. These are plasma and interstitial fluid.
capillaries
Oxygen, nutrients, waste products, hormones, and electrolytes are exchanged between the body cells and the blood plasma. This exchange occurs through the capillaries that connect the circulatory system with the cells in the tissues. Oxygen and nutrients are delivered to the cells, while waste products and carbon dioxide are removed from the cells and transported back to the excretory organs for elimination.
capillaries
capillaries
Those tiny and beautiful blood vessels are called as capillaries. You have millions of them in your body. The nutrition and oxygen is given out, at the proximal end. The metabolic wastes and carbon bi oxide in taken in, at the distal end.
Oxygen diffuses from the alveoli into the capillaries, where it binds to hemoglobin in red blood cells for transport to tissues. Carbon dioxide diffuses from the capillaries into the alveoli and is exhaled from the body.
capillaries
Capillaries via osmosis