Red cells,White cell & Plateless cell.
1 Arteries are elastic vessels that transport blood away from the heart. 2  Pulmonary arteries carry blood from the heart to the lungs where oxygen is picked up by red blood cells. 3  Systemic arteries deliver blood to the rest of the body. 4  Veins. 5  Veins are elastic vessels that transport blood to the heart. 1 Arteries. 2  Arteries are elastic vessels that transport blood away from the heart. 3  Pulmonary arteries carry blood from the heart to the lungs where oxygen is picked up by red blood cells. 4  Systemic arteries deliver blood to the rest of the body. 5  Veins. 6 The human circulatory system is composed of blood, blood vessels and the heart. There are three types of blood vessels which differ in structure and function. The heart serves as the pump for circulating blood around the body. Blood is the fluid that transports nutrients to all body tissues and wastes to the appropriate organ for elimination. Types of Blood cells. They are broadly of 3 types of blood cells like. 1. Red blood cells (R.B.C) / Red blood corposcules. 2. White blood cells. 3. Platelets/ thrombocytes. Red blood cells: These are cells responsible for reddish color of the blood. They are very high in concentration to other blood cells. It has many functions in the body and some of these functions are carried out by blood cells. But unlike normal body cells, blood cells are quite different in being isolated (not packed to form a tissue, free moving). Different Types of Blood Cells and Their Roles in the Human Body Blood is a mixture of two things: cells and plasma. The heart pumps blood through the arteries, capillaries and veins to provide oxygen and nutrients to every cell of the body. The blood also carries away waste products.  Materials are exchanged between blood and body tissues through the walls of blood vessels. Thus blood vessels are pathways of blood flow in human body. There are three main types of blood vessels; Arteries, Capillaries and Veins. For more details on types of blood vessels, visit:””. BLOOD: Blood is a specialized tissue of body that exists in fluid form. It is one of the five basic types of tissues of human body. (Blog post:Basic tissue types of Human Body).  There are three types of blood cells in the human body, but only one type of red blood cell. Red cells, or erythrocytes, are relatively large microscopic cells without nuclei … . In this latter trait, they are similar to the primitive prokaryotic cells of bacteria. The three different blood cells in the human body are:Blood Platlelets, which clot your bloodWhite blood cells, which fight bacteriaand red blood cells, which carry carbon dioxide and oxygen to and from the lungs. Hope I helped! Blood is vital substance in the human body. It is mainly composed of water, blood cells and other elements and substances. It has many functions in the body and some of these functions are carried out by blood cells. But unlike normal body cells, blood cells are quite different in being isolated (not packed to form a tissue, free moving). There are three main types of blood cells in the human body. These are the red blood cells, white blood cells and platelets. The red blood cells are also known as erythrocytes, white blood cells as leukocytes, and platelets as thrombocytes.  There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart. 
http://biology.about.com/od/humananatomybiology/ss/blood_vessels.htm http://www.e-missions.net/cybersurgeons/?/circ_teacher/ http://www.rajaha.com/types-blood-cells-human-body/ http://web.mit.edu/scicom/www/blood.html http://www.mananatomy.com/body-systems/cardiovascular-system http://www.answers.com/Q/What_are_the_three_types_of_blood_cells_in_the_human_body http://www.rajaha.com/types-blood-cells-human-body/ http://www.kidport.com/RefLib/Science/HumanBody/Cardiovascular/BloodCells.htm https://en.wikipedia.org/wiki/Blood_vessel
three types of blood in human body