What is the function of the 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.
What is the origin of cardiac plexus?
The cardiac plexus is formed by sympathetic nerves originating from the superior, middle, inferior cervical or cervicothoracic ganglia as well as from the first to the fifth thoracic ganglia.
What does the cardiac plexus contain?
The cardiac plexus is a plexus of nerves situated at the base of the heart that innervates the heart….
| Cardiac plexus | |
|---|---|
| The right sympathetic chain and its connections with the thoracic, abdominal, and pelvic plexuses. (Cardiac plexus labeled at center right.) | |
| Details | |
| Identifiers | |
| Latin | plexus cardiacus |
What is plexus anatomy?
A plexus is a bundle of intersecting nerves, blood vessels, or lymphatic vessels in the human body. These bundles typically originate from the same anatomical area and serve specific areas of the body. Bundles of nerves that form a plexus communicate information to your brain about pain, temperature, and pressure.
What sympathetic nerve Innervates the heart?
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.
Where is the vagus nerve?
The vagus nerve carries an extensive range of signals from digestive system and organs to the brain and vice versa. It is the tenth cranial nerve, extending from its origin in the brainstem through the neck and the thorax down to the abdomen.
Which nerves are in the cardiac plexus?
The branch passing behind the right pulmonary artery gives branches to the right atrium and then continues as a part of the posterior coronary plexus. The left half is essentially connected with the superficial part of the cardiac plexus and gives twigs to the left atrium and to the anterior pulmonary plexus.
Where is the cardiac plexus?
The deep cardiac plexus lies in front of the tracheal bifurcation behind the aortic arch and is formed by cardiac nerves arising from the cervical ganglia of the sympathetic trunk and cardiac branches off the vagus and recurrent laryngeal nerves.
What is the name of the plexus?
Plexuses. The four primary nerve plexuses are the cervical plexus, brachial plexus, lumbar plexus, and the sacral plexus. The choroid plexus is a part of the central nervous system in the brain and consists of capillaries, ventricles, and ependymal cells.
What happens when vagus nerve is blocked?
The vagus nerve stimulates certain muscles in the heart that help to slow heart rate. When it overreacts, it can cause a sudden drop in heart rate and blood pressure, resulting in fainting. This is known as vasovagal syncope.