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31 Cards in this Set
- Front
- Back
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Gas that enters the blood through the lungs |
Oxygen |
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Smallest blood vessel |
Capillary |
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Relaxation phase of the heartbeat |
Diastole |
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Upper chamber of the heart |
Atrium |
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Gas released by blood cells; travels via blood to the lungs where it is exhaled |
Carbon dioxide |
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Small artery |
Arteriole |
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Inner lining of the heart |
Endocardium |
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Specialized muscle fibers connecting the upper and lower heart chambers; bundle of His |
Atrioventricular bundle |
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Contraction phase of the heartbeat |
Systole |
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Largest artery in the body |
Aorta |
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Lower tip of the heat |
Apex |
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Double-layered membrane surrounding the heart |
Pericardium |
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Muscular,middle layer of the heart |
Myocardium |
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Positioned between the left upper and lower heart chambers |
Mitral valve |
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Innermost lining of blood vessels |
Endothelium |
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Resting rate of 60 to 100 beats per minute |
Normal sinus rhythm |
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Blood lacking in oxygen |
Deoxygenated blood |
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Blood vessels that carry oxygen- rich blood to the heart muscle |
Coronary arteries |
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Abnormal heart sound |
Murmur |
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Specialized nervous tissue in the right atrium that begins the heartbeat; senatorial node |
Pacemaker |
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Record of the electricity flowing through the heart |
Electrocardiogram |
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Small vein |
Venule |
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Beat of the heart as felt through the walls of the arteries |
Pulse |
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Located between the upper and lower right heart chambers |
Tricuspid valve |
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Instrument used to measure blood pressure |
Sphygomometer |
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Partition or wall dividing the chambers of the heart |
Septum |
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Located between the lower right chamber and the vessel carrying blood to the lungs |
Pulmonary valve |
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Lower chamber of the heart |
Ventricle |
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One of two pairs of vessels carrying oxygen-poor blood from the heart to the lungs |
Pulmonary vein |
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Vessels that carries oxygen oxygen-poor blood from the heat to the lungs |
Pulmonary artery |
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Largest vein in the body |
Vena cava |
