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What are the 5 structures that enable the heart to contract (cardiac conduction)

a. Which chambers of the heart contact?

User Silvestro
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Answer:

sinoatrial node

Step-by-step explanation:

impulses starts in small bundles of specialized cells which are located in the right atrium which is known as the SA node. The electrical activity tends to spread through the walls of the atria and then causes it to contract. however, forcing the blood into ventricles.

User Ritesh Adulkar
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