The Phrenic Nerve
The nerve that control the larynx during breathing is the Vagus Nerve.
The phrenic nerve arises from the cervical plexus (C3-C5) and supplies the diaphragm, which is the primary muscle involved in breathing.
Cervical plexus....
The phrenic nerve plexus supplies the diaphragm and controls its movement during respiration. Damage to this plexus can lead to impaired breathing and respiratory function.
The phrenic nerve arises from the cervical plexus, specifically from nerve roots C3, C4, and C5. It travels down through the thorax to innervate the diaphragm, playing a crucial role in breathing.
The major nerve that serves the head, neck, and shoulder plexus is the spinal accessory nerve (CN XI). It originates in the brainstem and courses through the neck to innervate muscles involved in head turning and shoulder shrugging.
cervical plexus
The cervical spinal nerves form the cervical plexus, the brachial spinal nerves form the brachial plexus, the lumbar and sacral spinal nerves form the lumbosacral plexus, and the sacral spinal nerves form the sacral plexus.
Phrenic nerves from brachial and cervical plexus.
The major plexuses of the spinal cord are: Cervical Plexus (C1–C4) – neck & diaphragm Brachial Plexus (C5–T1) – upper limbs Lumbar Plexus (L1–L4) – abdomen & thigh Sacral Plexus (L4–S4) – leg & foot Coccygeal Plexus (S4–Co1) – coccyx
The cervical plexus consists of one pair of nerves, specifically the first cervical nerve (C1). It primarily supplies the muscles and skin of the neck and is involved in several reflexes and functions, including controlling the diaphragm via the phrenic nerve.
lower back