PATHOLOGY MCQ
HEART
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Read the statements and choose incorrect one:
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The valves in the heart allows the flow of blood only in one direction, i.e., from the atria to the ventricles and from the ventricles to the pulmonary artery or aorta.
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The atrium and the ventricle of the same side are also separated by a thick fibrous tissue called the atrio-ventricular septum.
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AV bundle continues from the AVN which passes through the atrio-ventricular septa to emerge on the left of the inter-ventricular septum and immediately divides into a right and left bundle.
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This sequential event in the heart which is cyclically repeated is called the cardiac cycle a
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Explanation:
Detailed explanation-1: -The wave of excitation from the sino-atrial node (SA node) stimulates the atrio-ventricular node, thereby leading to the contraction of ventricles through the bundle of His and Purkinje fibres. Hence, the atrio-ventricular node and the atrioventricular bundle play a role in the contraction of ventricles.
Detailed explanation-2: -Bundle of His: A bundle of nodal fibres, atrioventricular bundle (AV bundle) continues from the AVN whichpasses through the atrio-ventricular septa to emerge on the top of the interventricular septum andimmediately divides into a right and left bundle.
There is 1 question to complete.