Choose the components of the cardiac conduction system from the following:
(a) SA Node
(b) Columnae carneae
(c) Purkinje fibres
(d) Chordae tendineae
(e) AV bundle

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a, b, c, d and e

Only a, b, c and e

Only a, b and e

Only a, c and e

answer is D.

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Detailed Solution

The cardiac conduction system includes SAN, AVN, AV bundle, bundle of His and Purkinje fibres.

Columnae carneae are the muscular ridges projecting from the wall of the ventricles. Chordae tendineae are the tendon-like cords that connect the papillary muscles to the cusps of AV valves.

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