refers to the short period during ventricular systole when the ventricles are completely closed chambers
When viewing a dissected heart, it is easy to visually discern the right and left ventricles by ________.

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Paroxysmal atrial tachycardia is characterized by bursts of atrial contractions with little pause between them.
When viewing a dissected heart, it is easy to visually discern the right and left ventricles by ________.
relatively mild blow to the chest that occurs during a vulnerable interval (2 ms) when the heart is repolarizing
The fact that the left ventricle of the heart is thicker than the right ventricle reveals that it ________.
Congestive heart failure means that the pumping efficiency of the heart is depressed so that there is inadequate delivery of blood to body tissues.
The fact that the left ventricle of the heart is thicker than the right ventricle reveals that it ________.
The "lub" sounds of the heart are valuable in diagnosis because they provide information about the function of the heart"s pulmonary and aortic valves.
Anastomoses among coronary arterial branches provide collateral routes for blood delivery to the heart muscle.
Chronic release of excess thyroxine can cause a sustained increase in heart rate and a weakened heart.
The AV valves are supported by chordae tendineae so that regurgitation of blood into the atria during ventricular contraction does not occur.
If the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells, ________.
The papillary muscles contract after the other ventricular muscles so that they can take up the slack on the chordae tendineae before the full force of ventricular contractions sends blood against the AV valve flaps.
As pressure in the aorta rises due to atherosclerosis, more ventricular pressure is required to open the aortic valve.
Paroxysmal atrial tachycardia is characterized by bursts of atrial contractions with little pause between them.
some calcium enters the cell from the extracellular space and triggers the release of larger amounts of calcium from intracellular stores
Congestive heart failure means that the pumping efficiency of the heart is depressed so that there is inadequate delivery of blood to body tissues.
If cardiac muscle is deprived of its normal blood supply, damage would primarily result from ________.

See more: Which Are The Smallest Leukocytes? Blood Flashcards


If we were able to artificially alter the membrane permeability of pacemaker cells so that sodium influx is more rapid, ________.
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Essentials of Human Anatomy and Physiology, Books a la Carte Plus MasteringA&P11th EditionElaine N. Marieb
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