15 Questions
What is the primary function of the pericardium?
To protect and anchor the heart
What type of muscle is found in the heart?
Cardiac muscle
What type of cells initiate the heartbeat?
Autorhythmic cells
What is the sequence of excitation in the heart?
SA node, AV node, bundle of His, Purkinje fibers
What is the electrical conduction pathway in the heart?
SA node, AV node, bundle of His, Purkinje fibers, ventricles
What is the purpose of the atrioventricular (AV) node?
To delay the impulse transmission to the ventricles
What is the term for the amount of blood pumped by each ventricle in one minute?
Cardiac output
What is the sequence of excitation in the cardiac conduction pathway?
SA node, AV node, Bundle of His, Purkinje fibers
Which type of cells are capable of generating an electrical impulse without an external stimulus?
Autorhythmic cells
What is the name of the pathway that conducts electrical impulses from the AV node to the ventricles?
Bundle of His
Which part of the cardiac conduction pathway has the lowest intrinsic firing rate?
AV node
What is the role of the SA node in the cardiac conduction pathway?
To generate an electrical impulse and stimulate the heart to contract
Where does the electrical impulse from the AV node travel to next?
Bundle of His
What is the name of the process by which the cardiac muscle contracts?
Excitation-contraction coupling
What is the purpose of the cardiac conduction pathway?
To stimulate the heart to contract
This quiz covers the anatomy and physiology of the heart, including the pericardium and its functions. Learn about the protective coverings of the heart and how they enable friction-free movement.
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