BIOL3324-Practice-Ex_39189

BIOL3324-Practice-Ex_39189 - 1) Sympathetic stimulation of...

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1) Sympathetic stimulation of the heart: a) increases the heart rate. b) increases Ca2+ permeability and thus increases contractile strength c) decreases K+ permeability resulting in a depolarizing effect at the SA node d) all of the answers e) none of these answers 2) The right half of the heart pumps blood through the _____ circuit and the left half pumps blood through the _____ circuit. a) systolic, diastolic b) coronary, pulmonary c) systemic, pulmonary d) pulmonary, systemic e) systemic, coronary 3) Which of the following ECG waves represents ventricular repolarization? a) P wave b) QRS complex c) T wave d) PR segment e) ventricular polarization occurs simultaneously with atrial depolarization and can not be recorded 4) The term systole means: a) closure b) conduction c) contraction d) opening e) relaxation 5) The term diastole means: a) closure b) conduction c) contraction d) opening e) relaxation 6) The heart valves open and close due to: a) attachment to the heart muscle. b) a pressure difference on the two sides of the valve. c) Na+ and K+ fluxes during ventricular depolarizations. d) turbulent flow in the atria and ventricles. e) none of these answers.
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7) Parasympathetic stimulation of the heart: a) increases the heart rate. b) increases Ca2+ permeability and thus increases contractile strength c) decreases K+ permeability resulting in a depolarizing effect at the SA node d) all of the answers e) none of these answers 8) Normally, the stroke volume of the right side of the heart is the same as the stroke
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This note was uploaded on 07/27/2011 for the course BIOL 3324 taught by Professor Ziburkus during the Fall '07 term at University of Houston.

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BIOL3324-Practice-Ex_39189 - 1) Sympathetic stimulation of...

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