Anatomy

What surrounds and protects the spinal cord?

What are epidural spaces in the spinal cord filled with?

What are the 5 parts of spinal cord protection?

Spinal Meninges Covering the Spinal Cord:
Dense irregular CT Tube

Spinal Meninges Covering the Spinal Cord:
Subdural space filled with ________ ______

Spider web of collagen fibers

Subarachnoid space

Thin layer covers BV
Denticulate ligs hold in place

Flattened cylinder
In adult ends at approximately L1-L2

Consists of 31 pairs of spinal nerves

External Anatomy of Spinal Cord:
Where is the cervical enlargement?

External Anatomy of Spinal Cord:
Where is the lumbar enlargement?

How are the spinal nerves named and numbered?

What types of nerves are in the spinal nerves?

Cone-shaped end of spinal cord

Thread-like extension of pia mater
Stabilizes spinal cord in canal

Dorsal & ventral roots of lowest spinal nerves

Gray Matter of the Spinal Cord:
Shaped like the letter _____ or a ________

Contains neuron cell bodies, unmyelinated axons & dendrites

Dorsal gray horn

Ventral gray horn

Lateral horns

The Central Canal is continuous with what ventricle of the brain?

What surrounds the gray matter of the spinal cord?

What contains axons that form ascending & descending tracts

What do spinal nerves begin as?

Dorsal root ganglion (swelling)

Incoming sensory fibers

Outgoing motor fibers

What are the 5 components of the reflex arc?

Area of skin supplied by one spinal nerve

What cranial nerve is the skin on face supplied by?

Dermatomes:
How can damaged regions of the spinal cord by distinguished?

Injury that severs the cord
Loss of sensation & motor control below the injury