Things to know about the Heart and Heart disease
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| The heart's pointed inferior portion is the | apex
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| The layer of the heart wall that pumps blood is the | myocardium
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| The heartbeat is initiated by electrical impulses from the | sinoatrial node
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| Lack of blood to a tissue due to blocked arteries is called | ischemia
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| Pain caused lack of blood to heart muscle is called | angina
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| Receives blood low in oxygen from the body | Right atrium
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| Receives blood high in oxygen from the lungs | Left atrium
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| Sends blood low in oxygen to the lungs | Right ventricle
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| Sends blood high in oxygen to the body | Left ventricle
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| Which structural characteristic promotes rapid transfer of electrical signals between cardiac muscle cells? | intercalated disks between the cells
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| What separates the upper chambers of the heart from each other? | interatrial septum
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| Which term describes one complete sequence of heart contraction and relaxation? | cardiac cycle
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| Cardiac output is the product of which factors? | stroke volume and heart rate
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| Which medication reduces cardiac output by lowering sympathetic responses? | beta-adrenergic blocking agent
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| Which variation in heart rate can be due to changes in the rate and dept of breathing? | sinus arrhythmia
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Created by:
Jessica Venyke
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