Fine-needle aspiration. Fine-needle aspiration (FNA), or fine-needle aspiration cytology (FNAC), is a diagnostic procedure used to investigate lumps or masses. In this technique, a thin (23-25 gauge), hollow needle is inserted into the mass for sampling of cells that, after being stained, will be examined under a microscope.
The function of blood vessels is to carry blood around the body. Blood vessels are the passageway of blood. They are found all over your body. When any blood vessel is punctur â¦ ed or cut,blood flows out.There are three kinds of blood vessels in the human body. These are arteries,the veins, and the capillaries.he function of the blood is mainly transportation. the blood leaves the left side of the heart oxygenated and full of nutrients which is then transported around the body via â¦ arteries and veins. Blood is 50% plasma which is a straw coloured liquid.
Blood is a specialized fluid in your body that has four main components, each with a different function: plasma, red blood cells, white blood cells, and platelets. Watch this video to learn more about how these components work.