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.
Blood is a bodily fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.he blood cells are mainly red blood cells (also called RBCs or erythrocytes), white blood cells (also called WBCs or leukocytes) and platelets. The most abundant cells in vertebrate blood are red blood cells.
The 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.The other components in blood are: Red blood cells (Erythrocytes) 40- 45% these carry O2 and nutrients. White blood cells (Leukocytes) These are for use in fighting infection and make up part of your lymphatic system.he blood vessels, which include the capillaries, function to distribute nutrients such as glucose and oxygen to the body tissues and to carry wastes such as carbon dioxide an â¦ d urea away from the tissues to be excreted.