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 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.he function of blood is to absorb the nutrients that the body needs. Also to transport things to various tissue of the body, to remove things from the tissue in the body. Hop â¦ e This Helps(: + 11 others found this useful.
Functions and Constituents. Functions of blood. Transports gases, nutrients, waste, cells and hormones throughout the body. Transports O2, CO2, nutrients, hormones, heat and wastes. Regulates pH, temperature, water content of cells. Protects against blood loss through clotting. Protects against disease through phagocytic white blood cells and antibodies. The process by which blood is made is called Haemopoiesis. Blood Constituents. Blood consists of blood cells and plasma. If blood is treated with an anticoagulant and centrifuged, the blood cells sediment leaving a supernatant of clear plasma. Blood Cells. The sedimented blood cells account for 35-50% of the volume of blood and are of three basic types. 1  erythrocytes or red blood cells. 2  leucocytes or white blood cells. 3  platelets or thrombocytes.