PHM 315 Ch 7b Word Scramble
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Question | Answer |
diastole | to expand; period in the cardiac cycle when blood enters the relaxed ventricles from the atria |
systole | to contract; period in the cardiac cycle whien the heart is in contraction and blood is ejected through the aorta and pulmonary artery |
normotension | normal blood pressure |
hypotension | low blood pressure |
hypertension | high blood pressure |
cardiac conduction | SA node -->AV node -->bundle of His-->bundle branches-->purkinje fibers |
sinoatrial node | the pacemaker, in the wall of right atrium, initiates electrical conduction of the heartbeat, causes atria to contract |
atrioventricular node | in center of heart, receives and amplifies condution from SA node to bundle of his |
bundle of His | goes from AV node to right and left bundle branches |
purkinje fibers | transmit impulses to the right and left ventricles causing them to contract |
polarization | resting, resting state of myocardial cell |
depolarization | change of a myocardial cell from polarized to a state of contraction |
repolarization | recharging of the myocardial cell from a contracted state back to resting |
normal sinus rhythm (NSR) | regular rhythm of the heart cycle stimulated by the SA node (60-100 bpm) |
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