Cardiac Physiology: Rhythms and Contractions Quiz

What term refers to the mechanism that causes cells of the SA node to depolarize rhythmically?

What is the general term for any abnormal cardiac rhythm?

What is the role of gated ion channels and specific ion inflows and outflows in creating the nodal rhythm?

What is the mechanism that causes the twisting mode of ventricular contraction in the heart?

Which wave of the ECG correlates with atrial systole?

What is the specific term for any abnormal cardiac rhythm originating from a focus other than the SA node?

Why does the shape of a myocardial action potential differ from that of a neuron?

What is responsible for changing conduction speeds at different points along the path of excitation in the heart?

What is the significance of the plateau and unusually long refractory period of myocardial action potentials?

What is the term for any abnormal cardiac rhythm originating from a focus other than the SA node?

Which ion is primarily responsible for the plateau and unusually long refractory period of myocardial action potentials?

What causes cells of the SA node to depolarize rhythmically?

Which wave of the ECG correlates with ventricular systole?

What role do the tendinous cords play in the heart?

What is responsible for the spread of excitation through the atria, AV node, AV bundle, and bundle branches?

What characteristic differentiates a nodal rhythm from a sinus rhythm?

What does the graph of pacemaker potentials depict?

What causes some changes in conduction speeds at different points along the path of excitation in the heart?

What is the term for any abnormal cardiac rhythm originating from a focus other than the SA node?

What causes the twisting mode of ventricular contraction in the heart?

Which ion is primarily responsible for the plateau and unusually long refractory period of myocardial action potentials?

What is the general term for any abnormal cardiac rhythm?

What is responsible for changing conduction speeds at different points along the path of excitation in the heart?

What does the graph of the time course and voltages of the pacemaker potentials depict?

What is the role of gated ion channels and specific ion inflows and outflows in creating the nodal rhythm?

What characteristic differentiates a nodal rhythm from a sinus rhythm?

What is the general term for any abnormal cardiac rhythm originating from a focus other than the SA node?

What is the mechanism that causes cells of the SA node to depolarize rhythmically?

What is the significance of the plateau and unusually long refractory period of myocardial action potentials?

What is responsible for the spread of excitation through the atria, AV node, AV bundle, and bundle branches?

What characteristic differentiates a nodal rhythm from a sinus rhythm?

What causes the twisting mode of ventricular contraction in the heart?

Which ion is primarily responsible for the plateau and unusually long refractory period of myocardial action potentials?

What does the graph of pacemaker potentials depict?

What wave of the ECG correlates with ventricular systole?

What is the term for any abnormal cardiac rhythm originating from a focus other than the SA node?

What characteristic differentiates a nodal rhythm from a sinus rhythm?

What does the graph of pacemaker potentials depict?

What is responsible for changing conduction speeds at different points along the path of excitation in the heart?

What causes the twisting mode of ventricular contraction in the heart?

What ion is primarily responsible for the plateau and unusually long refractory period of myocardial action potentials?

What wave of the ECG correlates with atrial systole?

What role do the tendinous cords play in the heart?

What is responsible for the spread of excitation through the atria, AV node, AV bundle, and bundle branches?