| A | B |
|---|
| Arteries | Thick-walled, carry blood away from the heart |
| Veins | Thin-walled, carry blood toward the heart |
| Arteries | Carries oxygenated blood |
| Arterioles | Arteries divided into smaller vessels |
| Veins | Carries deoxygenated blood |
| Veins | Contain valves which help prevent the backflow of blood |
| Venules | are veins divided into smaller vessels |
| Capillaries | Very thin-walled (one cell thick) |
| Capillaries | Site for the exchange of materials between the blood and body cells |
| Capillaries | Connect arterioles and venules |
| Heart muscle | myocardium |
| Heart | 4-chambered pump composed of 2 atria and 2 ventricles |
| Superior Vena Cava | Brings deoxygenated blood from the upper portion of the body and into the right atrium |
| Inferior Vena Cava | Brings deoxygenated blood from the lower portion of the body and into the right atrium |
| Right Atrium | Receives blood from inferior & superior vena cava |
| Right Ventricle | Receives blood from the right atrium and pumps it into the pulmonary artery |
| Pulmonary Arteries | Receives blood from the right ventricle and transports it to the lungs |
| Pulmonary Veins | Receives oxygenated blood from the lungs and transports it to the left atrium |
| Left Atrium | Receives blood from the pulmonary vein and pumps it into the left ventricle |
| Left Ventricle | Receives blood from the left atrium and pumps it into the aorta |
| Aorta | Receives blood from the left ventricle and transports it to the rest of the body |
| Intraventricular Septum | Separates the heart ventricles into a left and right side |
| Pulmonary Circulation | The pathway from which blood flows from the heart à to the lungs à and back to the heart |
| Systemic Circulation | The pathway that carries blood from the heart to all parts of the body with the exception of the lungs |
| Coronary Circulation | Myocardium is supplied with blood through a system of coronary blood vessels |
| Coronary arteries | first branch of aorta;supply oxygenated blood to myocardium |
| Cardiovascular Diseases | Are diseases of the heart and blood vessels |
| High Blood Pressure | Increased pressure in the arteries due to stress, diet, cigarette smoking, and aging |
| myocardial infarction | Blockage of a coronary artery; heart attack |
| Angina Pectoris | Spasm/narrowing of coronary artery; temporary |
| brachiocephalic | first artery branching off the aortic arch |
| anastomoses | alternate coronary blood pathways |
| mediastinum | chest cavity location of heart |
| pericardium | tissues surrounding the heart |
| tricuspid valve | right A-V valve |
| bicuspid or mitral valve | left A-V valve |
| chordae tendinae | connect cusps of A-V valves to myocardium |
| papillary muscles | connect chordae tendinae to ventricle myocardium |
| 70 ml. | average stroke volume of adult heart |
| 75 beats/minute | average heart rate of adult |
| atherosclerosis | plaque build up in arteries |
| angina pectoris | heart pain, short duration |
| cardiac arrest | heart stops beating |
| heart failure | heart cant pump blood effectively |
| thrombosis | blood clot that moves |
