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27 Cards in this Set
- Front
- Back
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Cardiorespiratory system |
Cardiovascular and respiratory systems |
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Cardiovascular system |
Heart, blood, and blood vessels |
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Cardiac muscle |
Shorter, more tightly connected and skeletal muscles; involuntary |
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atria |
Smaller, superior chambers of the heart; receive blood from veins |
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Right atrium |
Gathers deoxygenated blood returning to the heart |
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Left atrium |
Gathers oxygenated blood from the lungs |
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Sinoatrial node |
Located in right atrium; initiates impulse for heart rate; “pacemaker for the heart“ |
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Ventricles |
Larger, inferior chambers of the heart; pump blood out |
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Right ventricle |
Pumps Deoxygenated blood to lungs |
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Left |
Pam’s oxygenated blood to the body |
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Arteries |
Carry blood away from heart |
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Veins |
Transport blood back to the heart |
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Arterioles |
Small branches of arteries; end in capillaries |
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Capillaries |
Smallest blood vessels; site of gas, chemical, and water exchange |
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Venules |
Very small veins; connect capillaries to larger veins |
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Stroke volume |
Amount of blood pumped with each contraction |
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Heart rate |
The rate at which the heart pumps; average untrained adult equals 70 to 80 bpm |
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Cardiac |
Volume of blood pumped for minute; heart rate times the stroke volume |
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Respiratory system |
Lungs and respiratory passageways; brings in oxygen, removes carbon dioxide |
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Inspiration |
Contracting inspiratory muscles to move air in the lungs |
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Primary inspiratory muscles |
Diaphragm, external intercostals |
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Secondary inspiratory muscles |
Scalenes, pectoralis minor, sternocleidomastoid |
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Expiration |
Relaxing inspiratory muscles (passive), contracting expiratory muscles (active) to move air out |
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Expiratory muscles |
Internal intercostals, abdominals |
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Resting oxygen consumption (VO2) |
3.5 ml x kg-1 x min-1 = 1 metabolic equivalent (MET) |
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Maximal oxygen consumption (VO2max) |
Highest rate of oxygen transport and utilization achieved at maximal physical exertion |
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Abnormal breathing patterns |
Associated with stress and anxiety; may result in headaches, fatigue, poor circulation, and/or poor sleep patterns |
