Spinal Cord and Spinal Nerves Exam Questions and Answers with Verified Solutions | Latest Updated 2026

Spinal Cord and Spinal Nerves Exam
Questions and Answers with Verified
Solutions | Latest Updated 2026



Spinal Cord -lies in the vertebral canal
-extends from the foramen magnum to
L1/L2
-approximately 18 inches long in adults


Peripheral Nervous System (PNS) 1. Spinal Nerves:
-8 pairs of cervical nerves
-12 pairs thoracic nerves
-5 pairs lumbar nerves
-5 pairs sacral nerves
-1 pair coccygeal nerve


C1 Nerves -exit above the atlas (C1)



C2-C7 Nerves -exit above the vertebra with the same
number


C8 Nerve -exit below vertebra C7



Where do subsequent spinal -below the vertebra of the same number
nerves
exit?

, Why are changes in the cross- -due to increased numbers of motor
sectional shape of the spinal cord neurons int he
occur? gray matter of the cervical and lumbar
regions
-these neurons are needed to innervate
the upper
and lower limbs


Spinal Cord Meninges 1. epidural-fat
2. dura mater
3. subdural space
4. arachnoid mater
5. subarachnoid space
7. pia mater


Denticulate Ligament -anchor down spinal cord



Where does the spinal cord -the caudal portion of the neural tube
develop
from?


Spina Bifida -absence of vertebral laminae
-more common forms of this result from
failure of
the vertebrae to enclose the spinal cord


Spina Bifida Occulta -spine that is hidden



Meningocele -meninges where they shouldn't be