Capillaries are the tiniest of the blood vessels. They connect veins and arteries, and are the site of gas exchange.
Blood vessels are the tubes that carry blood. The smallest of the blood vessels are the capillaries.
Tubes in the kidney. I'm not sure what they are called, though.
they are called capillaries
Tubes that carry blood are collectively known as blood vessels. These include veins, arteries, and capillaries.
cappilaries
Blood tubes for collecting lab specimens are called evacuated tubes because all air has been removed from them. The resultant vacuum allows them to fill automatically when connected to a vessel or other specimen source.
The main tubes that carry blood to the brain are the carotid arteries. They are east to locate in your neck.
capillaries
The tubes that carry blood are the blood vessels. They include capillaries, veins, and arteries.
they are called capillaries
The tubes are called capillaries.All sorts of tubes ("vessels") carry blood around the body, but the smallest are known as "capillaries", taken from Latin capillaris ("of hair", since capillaries are as thin as hairs).The smallest of blood vessels are capillaries.
You need to be more descriptive with your question. There are lots of things that could be called "clot tubes". Small blood vessels are called capillaries. The blood cells that play a primary role in clotting are called platelets.