Blood Pressure
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| diastole | to expand; period in the cardiac cycle when blood enters the relaxed ventricles from the atria
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| systole | to contract; period in the cardiac cycle whien the heart is in contraction and blood is ejected through the aorta and pulmonary artery
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| normotension | normal blood pressure
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| hypotension | low blood pressure
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| hypertension | high blood pressure
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| cardiac conduction | SA node -->AV node -->bundle of His-->bundle branches-->purkinje fibers
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| sinoatrial node | the pacemaker, in the wall of right atrium, initiates electrical conduction of the heartbeat, causes atria to contract
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| atrioventricular node | in center of heart, receives and amplifies condution from SA node to bundle of his
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| bundle of His | goes from AV node to right and left bundle branches
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| purkinje fibers | transmit impulses to the right and left ventricles causing them to contract
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| polarization | resting, resting state of myocardial cell
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| depolarization | change of a myocardial cell from polarized to a state of contraction
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| repolarization | recharging of the myocardial cell from a contracted state back to resting
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| normal sinus rhythm (NSR) | regular rhythm of the heart cycle stimulated by the SA node (60-100 bpm)
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