T5 NERVE

 

ORIGIN: Spinal cord segment T5.

COURSE/DISTRIBUTION: This nerve takes origin from spinal cord segment T5 and leaves the vertebral canal by passing through the intervertebral foramen between T5 and T6 vertebrae. It immediately divides into two rami- dorsal and ventral rami.

Dorsal ramus:

Immediately a turn backwards, close to T5 costotransverse joint and divides into medial and lateral branches.

Ventral ramus:

Continues as the fifth intercostal nerve, which runs in the costal groove of the 5th rib under the 5th posterior intercostal artery. The 5th superior anterior intercostal artery later replaces this artery in the same groove.

BRANCHES.

ROOT VALUE: T5

Tip:  T1-T6 nerves have the same course.

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