Cervical spinal nerve 4

Cervical spinal nerve
The plan of the cervical and brachial plexuses.
The spinal cord with spinal nerves.
Details
Latin	Nervi spinalis
*Anatomical terminology* [edit on Wikidata]

The cervical spinal nerve 4 (C4) is a spinal nerve of the cervical segment.^[1]

It originates from the spinal column from above the cervical vertebra 4 (C4).

Its control of the thoracic diaphragm has inspired a medical mnemonic: "Cut C4, breathe no more."

Additional Images

Spinal nerves

Cervical	C1 C2 C3 C4 C5 C6 C7 C8 anterior Cervical plexus Brachial plexus posterior Posterior branches of cervical nerves Suboccipital – C1 Greater occipital – C2 Third occipital – C3

Thoracic	T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 anterior Intercostal Intercostobrachial – T2 Thoraco-abdominal nerves – T7–T11 Subcostal – T12 posterior Posterior branches of thoracic nerves

Lumbar	L1 L2 L3 L4 L5 anterior Lumbar plexus Lumbosacral trunk posterior Posterior branches of the lumbar nerves Superior cluneal L1–L3

Sacral	S1 S2 S3 S4 S5 anterior Sacral plexus posterior Posterior branches of sacral nerves Medial cluneal nerves

Coccygeal	anterior Coccygeal plexus posterior Posterior branch of coccygeal nerve

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