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Chapter 11: Cardio
Cardiovascular System Vocabulary Terms
| Question | Answer |
|---|---|
| Aorta: | Largest artery in the body |
| Arteriole: | Small artery |
| Artery: | largest type of blood vessel; carries blood away from the heart to all parts of the body |
| Atrioventricular node: | Specialized tissue in the wall between the atria. Electrical impulses pass from the pacemaker through the AV node. |
| Atrium: | One of two upper chambers of the heart |
| Capillary: | Smallest blood vessel. Materials pass to and from the bloodstream through the thin capillary walls |
| Carbon Dioxide: | Gas released by body cells, transported via veins to the heart and then to the lungs for exhalation |
| Deoxygenated blood: | Blood that is oxygen-poor |
| Diastole: | Relaxation phase of the heartbeat |
| Electrocardiogram: | Record of the electricity flowing through the heart |
| Endocardium: | Inner lining of the heart |
| Endothelium: | Innermost living of blood vessels |
| Mitral Valve: | Valve between the left atrium and the left ventricle |
| Murmur: | Abnormal heart sound caused by improper closure of the heart valves |
| Myocardium: | Muscular, middle layer of the heart |
| Normal Sinus Rhythm: | Heart rhythm originating in the sinoatrial node with a resting rate of 60 to 100 beats per minute |
| Oxygen: | Gas that enters the blood through the lungs and travels to the heart to be pumped via arteries to all body cells |
| Pacemaker: | Speacialized nervous tissue in the right atrium that begins the heartbeat. |
| Pericardium: | Double-layered membrane surrounding the heart |
| Pulmonary Artery: | Artery carrying oxygen-poor blood from the heart to the lungs |
| Pulmonary Circulation: | Flow of blood from the heart to the lungs and back to the heart |
| Pulmonary Valve: | Valve positioned between the right ventricle and the pulmonary artery |
| Pulmonary Vein: | One of two parts of vessels carrying oxygenated blood from the lungs to the left artrium of the heart |
| Pulse: | Beat of the heart as felt through the walls of the arteries |
| Septum: | Partition or wall dividing a cavity; such as between the right and left atria |
| Sinoatrial Node: | Pacemaker of the heart |
| Sphygmomanometer: | Instrument to measure blood pressure |
| Systemic Circulation: | Flow of blood from body tissue to the heart and then from the heart back to body tissues |
| Systole: | Contraction phase of the heartbeat |
| Tricuspid Valve: | Located between the right atrium and the right ventricle |
| Valve: | Structure in veins or in the heart that temporarily closes and opening so that blood flows in only one direction |
| Vein: | Thin-walled vessel that carries blood from body tissues and lungs back to the heart |
| Vena Cava: | Largest vein in the body |
| Ventricle: | One of two lower chambers of the heart |
| Venule: | Small vein |
Created by:
oxdaniellexo
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