Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025
Definition
The intercostal nerves are part of the peripheral nervous system and run between the ribs to supply the chest wall and abdominal muscles with motor and sensory innervation. They arise from the thoracic spinal nerves T1 through T11.
The network of nerves that exists outside the brain and spinal cord, connecting them to limbs and organs.
Thoracic Spinal Nerves: A group of twelve nerves that emerge from the thoracic region of the spinal cord, playing key roles in motor and sensory transmission.
Sensory Innervation: The process by which nerve fibers provide sensation to different parts of the body, including pain, temperature, and touch