yes it does. the are so small that only one red blood cell at a time can pass through them. the thiness of the wallsmeans that is easy for oxygen and nutrients to move out of them and waste products such as carbon dioxide to move into them.
It is important that blood move very slowly through the capillaries because its a tight place if it goes to fast it throws everything off track and can cause serious damage = )
Blood does not move faster through the capillaries. Blood flow is slowest in the capillaries.
Draven and Sona
Red blood cells have to pass through capillaries in a single file so the cells move fairly slowly. Because arteries have enough space to allow multiple red blood cells to pass side by side, blood flows fairly quickly. Therefore, blood moves more rapidly in arteries.
Capillaries do not vary in thickness, they are very thin. The thin wall permits the exchange between the blood in the capillary and the adjacent tissue cells.
All arteries, as they move towards the body become smaller and smalled leading to capillaries. Capillaries then, rejoin to create veins.
The round cells that move in the blood capillaries are called RED BLOOD CELLS.
Blood does not move slowly through the body. Blood moves very fast through the aorta. The speed of blood in aorta is about 50 cm per second. The speed of the blood through the cappilaries is very slow. It is only 0.05 cm per second. The The speed of blood in inversely proportional to the cross section of the diameter of the conducting blood vessels. The total diameter of the capillaries being very large, blood flows slowly through the capillaries. Although the diameter of the individual capillary is very small. But the length of the capillaries is very less. So this is not a problem, but an advantage. You get time for transfer of the nutrients and oxygen, as well as waste products of metabolism and carbon bi oxide. It takes only about 15 seconds for the blood to get back in the same chamber of the heart.
it works better and move fast trough your blood vessels.
Capillaries
Materials needed by the cells move from the blood into the cells, and waste materials move from the cells into the blood.
by means o chorva