Which spinal nerve roots form the origin of the phrenic nerve?
Explanation
The phrenic nerve arises from the cervical spinal nerves C3, C4, and C5. This nerve is crucial for motor innervation of the diaphragm, which is essential for breathing.
The phrenic nerve arises from the cervical spinal nerves C3, C4, and C5. This nerve is crucial for motor innervation of the diaphragm, which is essential for breathing.