Skip to product information
1 of 2

Yousun Koh

Nerves of the heart (English)

Nerves of the heart (English)

The heart is supplied mainly by the cardiac plexus, comprising fibers from both sympathetic and parasympathetic nervous systems. Sympathetic supply comes primarily from the preganglionic fibers that originate from the intermediolateral nucleus (a.k.a. column) in the first four or five thoracic segments of the spinal cord. These fibers synapse in the cervical and superior thoracic paravertebral ganglia of the sympathetic trunks. Postganglionic fibers from these ganglia unite to form the superior, middle, inferior cervical, and thoracic cardiac nerves. Parasympathetic supply comes from pregangionic fibers that arise from neurons either in the posterior nucleus of vagus nerve or near the nucleus ambiguus, and run in cardiac branches of the vagus nerves. Postganglionic parasympathetic cell bodies (intrinsic ganglia) are located in the atrial wall and interatrial septum near the SA and AV nodes and along the coronary arteries.
  • Science

    License for academic purposes such as theses, research publishing and the scientific discourse

  • Education

    License for educational purposes, live teaching, presentations, handouts and exam papers

  • Commerce

    License for commercial purposes, editorial use, broadcast and video, website and social media

  • Please visit our License page to find out which license is best for you.
  • The extended usage unlocks additional ways to use our illustrations. Check the license terms for more info.

Regular price $7.56 USD
Regular price Sale price $7.56 USD
Sale Sold out
View full details
Content type
File size
271.31 KB
2 MP