10. Innervations of heart. Extra-and intracardiac nervosus plexus, their topography. (Anatomy)
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Answer:
Explanation:
The heart is innervated by vagal and sympathetic fibers. The right vagus nerve primarily innervates the SA node, whereas the left vagus innervates the AV node; however, there can be significant overlap in the anatomical distribution.
It is formed by the cardiac nerves derived from the cervical ganglia of the sympathetic trunk and the cardiac branches of the vagus and recurrent laryngeal nerves except those that supply the superficial cardiac plexus.
The network of nerves supplying the heart is called the cardiac plexus. It receives contributions from the right and left vagus nerves, as well as contributions from the sympathetic trunk. These are responsible for influencing heart rate, cardiac output, and contraction forces of the heart.
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