- Answer: (D) SA Node, AV Node, Bundle Of HIS, Bundle Branche, Purkinji Fibers
- Explanation: This sequence represents the flow of electrical impulses through the intrinsic conduction system of the heart:
- SA Node: Initiates the impulse
- AV Node: Delays the impulse to allow proper filling of the ventricles
- Bundle of His: Conducts the impulse rapidly down into the ventricles
- Bundle Branches: Divide the impulse into the left and right bundle branches
- Purkinji Fibers: Spread the impulse quickly throughout the ventricular myocardium, causing coordinated contraction
(A)Right Atrium And Left Ventricle
(B)Right And Left Ventricle
(C)Left Ventricle and Aorta
(D)Left Atrium And Left ventricle
- Answer: (D) Left Atrium And Left ventricle
- Explanation: The mitral valve, also known as the bicuspid valve, is located between the left atrium and the left ventricle. It prevents blood from flowing back from the ventricle to the atrium during ventricular systole.
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