| A | B |
|---|
| cardiovascular | body system that consist of the heart,blood vessels, and blood |
| heart | a hollow, muscular organ that pumps blood throughout the body |
| atrium | each of the two upper chambers of the heart that receives blood that comes into the heart |
| ventricle | each of the two lower chambers of the heart that pumps blood out of the heart |
| aorta | the largest artery in the body - receives blood from the left ventricle |
| septum | the wall of tissue that separates the right side of the heart from the left side of the heart |
| pacemaker | a group of cells located in the right atrium that sends out signals that make the heart muscle contract and that regulates heart rate. |
| arteries | blood vessels that carries blood away from the heart. |
| capillaries | tiny blood vessels where substances are exchanged between the blood and the body cells |
| veins | blood vessels that carry blood back to the heart |
| pulse | the alternating expansion and relaxation of an artery wall as blood travels through an artery |
| blood pressure | the pressure that is exerted by the blood against the walls of blood vessels. |
| plasma | the liquid part of blood |
| erythrocytes | a cell in the blood that takes up oxygen in the lungs and delivers it to cells elsewhere in the body. |
| hemoglobin | an iron-containing protein that binds chemically to oxygen molecules |
| leukocytes | a colorless cell that circulates in the blood and body fluids and is involved in counteracting foreign substances and disease |
| cytes | cell |
| thrombocytes | also known as platelets, are cell fragments that play an important part in forming blood clots |
| lymphatic system | a network of veinlike vessels that returns the fluid that leaks out of blood vessels to the bloodstream |
| lymph nodes | a small knob of tissue in the lymphatic system that filters lymph, trapping bacteria and other microorganisms that cause disease |
| atherosclerosis | a condition in which an artery wall thickens as a result of the buildup of fatty materials |
| heart attack | a condition in which blood flow to part of the heart muscle is blocked, causing heart cells to die |
| hypertension | a disorder in which a person's blood pressure is consistently higher than normal;also called high blood pressure. |
| thrombocytes | a small colorless disk-shaped cell fragment without a nucleus, found in large numbers in blood and involved in clotting. |
| pulmonary circulation | Circulation that carries blood from the heart, through the lungs, and back to the heart. |
| arterioles | small arteries |
| venules | small veins |
| systemic circulation | Circulation that sends oxygen-rich blood to all the body tissues except the lungs. |
| valves | Tissue that can open and close. They separate the chambers of the heart. |
| pulmonary | pertaining to the lungs |
| superior vena cava | One of the largest veins that carries blood from the head, neck, arms, and chest to the heart. |
| inferior vena cava | One of the largest veins which carries blood from the legs and feet and from organs in the abdomen and pelvis to the heart |
| pulmonary artery | carries deoxygenated blood from heart to lungs |
| vena cava | largest veins that bring deoxygenated blood from the body to the heart. |
| coronary artery | the main artery that supplies blood to the heart; blockage will cause heart attack. |
| pulmonary vein | carries oxygenated blood from lungs to heart |
| pericardium | A double membranous sac which envelops and protects the heart |
| pericardial cavity | the space between the layers of the pericardium that contains fluid that lubricates the membrane surfaces and allows easy heart movement |
| epicardium | outer most layer of the heart wall |
| myocardium | the thick, middle layer of the heart and is composed of cardiac muscle |
| endocardium | a thin serous membrane lining the chambers of the heart |
| chordae tendineae | string like processes in the heart that attach the edges of the bicuspid and tricuspid valves to the walls of the ventricles |
| mediastinum | the anatomic region located between the lungs that contains all the principal tissues and organs of the chest except the lungs |
