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All of the following are true about phlo...

All of the following are true about phloem except

A

Trabeculae carnae , the muscular ridges of ventricles are also known as columnae carnae

B

Musculi pectinati are present in ventricular walls

C

There are three papillary muscles in right ventricle are two in left ventricle

D

Papillary muscles are attached to AV valves through chordae tendinae

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The correct Answer is:
B
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