Mastrangelo Lab #10: Spinal Cord (Draft)

[INCLUDES REAL CADAVER IMAGES FROM MCGRAW HILL'S A&P REVEALED FOR EDUCATIONAL PURPOSES] Images from A&P Revealed by McGraw Hill & Google. Made for Prof. Michael Mastrangelo's A&P I Lab.

What is the highlighted structure? (orange)

Conus Medullaris

Where is the conus medullaris located?

Upper lumbar vertebral canal

What is the conus medullaris?

Tapered inferior end of spinal cord (The spinal cord ends at L2 vertebra in adults)

What is the highlighted structure? (yellow)

Cauda equina (horse tail)

Where is the cauda equina located?

Vertebral canal inferior to L2 vertebra level

What is the cauda equina?

A large bundle of dorsal and ventral roots for spinal nerves below L2

What is the highlighted structure? (green)

Filum terminale

Where is the filum terminale located?

Vertrebral canal (inferior to L2 vertebra)

What is the filum terminale?

A filament of the pia mater which forms at the top of the conus medullaris and passes through the sacral hiatus to attach to the coccyx

What is the highlighted structure? (yellow)

Spinal nerve

Where is the spinal nerve located?

Intervertebral foramen

What is the highlighted structure? (yellow)

Dorsal root ganglion

Where is the dorsal root ganglion located?

On the dorsal root 

What is the dorsal root ganglion?

A sensory ganglion (contains cell bodies of afferent (sensory) neurons)

3 white columns (funiculi)

What is the highlighted structure? (yellow)

Dorsal root

ventral root

gray commissure

posterior (dorsal) horn

anterior (ventral) horn

lateral horn

dorsal ramus

ventral ramus

gray matter

white matter

grrrr

bweh