Phrenic Nerve
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The lungs (and the pathways to outside), the chest wall, and the diaphragm. The brain controls the process and the nerves control the muscles.
The primary nerves involved in breathing are the phrenic nerve and the intercostal nerves. The phrenic nerve controls the diaphragm, the main muscle involved in breathing, while the intercostal nerves control the muscles between the ribs that help with the mechanics of breathing.
The major function of the phrenic nerves is to innervate the diaphragm, which is the primary muscle responsible for respiration. These nerves play a crucial role in controlling the movement of the diaphragm during breathing by sending signals from the brain to the diaphragm muscle. Dysfunction of the phrenic nerves can lead to respiratory issues and difficulty breathing.
All muscles are in the control of an animal, even the heart and diaphragm. They are just subconscious.
The Radial Nerve.
The phrenic nerve controls your diaphragm. It connects your diaphragm with the back of your brain. Normally it works automatically but you can consciously control it.
You die.
When you breathe, the actions of your rib muscles and diaphragm expand or contract your chest. As a result, air flows in and out.
The nerves in the Somatic Nervous System control writing because writing is not an involuntary action.
There are no muscles that are controlled by force of will. Your brain sends messages to the nerves that control your muscles and that is what moves them.
Phrenic nerves from brachial and cervical plexus.