lec 15: The Spinal Cord and Spinal Nerves Exam Questions and Answers with Verified Solutions | Latest Updated 2026

lec 15: The Spinal Cord and Spinal Nerves
Exam Questions and Answers with Verified
Solutions | Latest Updated 2026



Three Functions of the Spinal 1. Integrative/Mediator of simple reflexes
Cord 2. Relay sensory information from body
(from PNS)
to brain
3. Relay motor/effector information from
brain to
body (into PNS)


1. Protective structures of the 1. bone
spinal 2. CT
cord 3. fluid


The spinal cord is protected by the
-
vertebral column


The Spinal Cord Has Meninges



Denticulate ligaments extension of the pia mater that anchor the
spinal
cord to the dura mater and limit the
movement of
the cord.
(think of dental and shark teeth)

, Spinal Cord and Vertebral
Transverse
Section (anterior)


Outside of the Spinal Cord in order of superficial to deep 1 -> 6
2. adipose CT


2. External Anatomy of the Spinal
Cord


External Anatomy of the Spinal 2 different thick areas because need a
Cord large
(inferior) amount of CT, axons, neurons, for arms
and legs


Gross Anatomy of the Spinal Cord
(at
the very end - inferior)


Clinical Connection: Spinal Tap sample CSF to test for infections or
(Lumbar Puncture) epidural etc.
can cause paralysis if in the wrong area


External Anatomy of the Spinal 1. shallow fold (like brain sulcus)
Cord 2. deep fold (like brain fissure)


Internal Anatomy of the Spinal 1. butterfly
Cord 5. canal is for csf