A collection of heart muscle cells specialised in electrical
conduction are
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Answer:
AVN which is Atrio-Venticular Node.
Explanation:
The cardiac conduction system is a group of specialized cardiac muscle cells in the walls of the heart that send signals to the heart muscle causing it to contract. The main components of the cardiac conduction system are the SA node, AV node, bundle of His, bundle branches, and Purkinje fibers.
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