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. n. 1. (Physiology) a reddish fluid in vertebrates that is pumped by the heart through the arteries and veins, supplies tissues with nutrients, oxygen, etc, and removes waste products. It consists of a fluid (see blood plasma) containing cells (erythrocytes, leucocytes, and platelets).lood. 1. The fluid that circulates through the body of a mammal or other vertebrate animal by the action of the heart, carrying oxygen and nutrients to the body's cells and removing waste products from them.