WorksheetsCVS Module: Topic 2_Electrophysiology of the heart
Total questions: 16
Worksheet time: 8mins
AV node has sympathetic innervation
True
False
SA node is innervated by vagus nerve
True
False
AV node has the fastest rate of depolarization in the heart
True
False
SA node has the fastest rate of depolarization following parasympathetic stimulation
True
False
SA node depolarization is faster in hyperthyroidism
True
False
AV node is the only electrical connection between the atria and the ventricles
True
False
SA node shows a greater rate of depolarization in hyperkalemia.
True
False
The following statement is true:
The impulse spreads in the atrial muscle through the internodal pathway
The impulse spreads in the atrial muscle through the purkinje fibres
The following statement is true:
In the left ventricle, depolarization spreads from the epicardium to the endocardium
In the left ventricle, depolarization spreads from the endocardium to the epicardium
The following statement is true:
The AV node has the slowest conduction velocity
The AV node has the fastest conduction velocity
The following statement is true:
The right ventricle receives the impulse earlier than the left ventricle
The left ventricle receives the impulse earlier than the right ventricle
The following statement is true:
Pacemaker cells of the heart depolarize due to the entry of Ca 2+
Pacemaker cells of the heart depolarize due to the entry of Na+
Pacemaker cells of the heart do not have resting potential
True
False
Pacemaker cells of the heart contract when stimulated
True
False
Contractility of cardiac tissue is increased by sympathetic stimulation
True
False
Automaticity is highest in ventricular muscle
True
False
