10 Questions
Which term describes the ability of cardiac muscle to respond to a stimulus by generating action potential?
Excitability
Where does the initiation of the excitation wave at a regular rhythm occur in the cardiac muscle?
SA Node
Which property of cardiac muscle refers to the ability to conduct impulses?
Conductivity
What is the primary function of the contractile tissue in the heart?
Pumping action
Which type of cells in the cardiac muscle initiate and propagate the cardiac impulse?
SA Node
In which tissue of the heart does auto-rhythmicity predominantly occur?
SA Node
What characterizes the ability of cardiac muscle to regularly self-excite without external stimulus?
Autorhythmicity
Which structure in the heart is responsible for conducting the excitation wave as fast as possible?
His Bundle
What is the term used to describe the ability of cardiac muscle to respond by contraction?
Contractility
What differentiates autorhythmic fibers from typical contractile fibers in the heart?
Ability to generate action potentials
Explore the significance of spontaneous depolarizations in triggering the excitatory wave of the heart, as well as the characteristics of the Sino-Atrial (SA) node. Learn about the role of cardiac pace-makers such as the SA and Atrio-Ventricular (AV) nodes.
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