Arko Dewri Period 4 Biology 9H 4/6/2010 Chapter 34 Vocabulary • 32.1 1. Artery – Elastic, thick-walled blood vessel that carries oxygenated blood away from the heart. 2. Atherosclerosis – Circulatory system disorder in which arteries are blocked, restricting blood flow. 3. Capillary – Microscopic, one-cell-wall thick blood vessel where exchange of materials occurs between blood and body cells. 4. Heart – Hollow, muscular organ that pumps oxygenated blood to the body and deoxygenated blood to the lungs. 5. Pacemaker – Heart’s sinoatrial node, which initiates contraction of the heart. 6. Plasma – Clear, yellowish fluid portion of the blood. 7. Platelet – Flat cell fragment that functions in blood clotting. 8. Red Blood Cell – Hemoglobin-containing, disc-shaped, short-lived blood cell that lacks a nucleus and that transports oxygen to all the body’s cell. 9. Valve – One of the tissue flaps in veins that prevents backflow of blood. 10. Vein – Blood vessel that carries deoxygenated blood back to the heart.
This is the end of the preview. Sign up
access the rest of the document.
This note was uploaded on 04/03/2012 for the course LITERATURE 201 taught by Professor Mr.nielsen during the Spring '09 term at Franklin College of Indiana.