Spinal Cord and Nerves

Question 1

• Extends from the brainstem to the lumbar
region, protected by vertebrae.

• Functions in transmitting information
between body and brain.

• Controls reflex actions through local circuitry

Answer 1

Spinal Cord Structure

Question 2

• Gray matter (cell bodies)
centrally located, white
matter (myelinated axons)
peripherally.

• Dorsal (sensory) and ventral
(motor) roots emerge from
each spinal segment

Answer 2

Cross-Section of the Spinal Cord

Question 3

• 31 pairs of spinal nerves connect the CNS to the body.

• Spinal nerves contain both sensory and motor fibers.

• Nerves innervate specific body regions and organs

Answer 3

Spinal Nerves

Question 4

• Nerve roots continuing from spinal cord end below L2, innervating lower
body.

• Facilitates control over lower limbs and pelvic organs.

• Important in diagnosing conditions like cauda equina syndrome

Answer 4

Cauda Equina