Lab 7: Spinal cord and Spinal Nerves

posterior median sulcus

anterior median fissure

Name this groove

cervical enlargement

lumbar enlargement

conus medullaris

posterior white column

A

anterior white column

C

lateral white column

B

posterior gray horn

anterior gray horn

lateral gray horn

gray commissure

Part of grey matter connecting the two halves of the grey matter in spinal cord

central canal

Hole in the center

Name this passageway

epidural space

dura mater

thick, outermost layer of the meninges surrounding and protecting the brain and spinal cord

subdural space

space between dura mater and arachnoid mater

arachnoid mater

middle layer of the meninges

B on model

subarachnoid space

a space in the meninges beneath the arachnoid membrane and above the pia mater that contains the cerebrospinal fluid

pia mater

the delicate innermost membrane enveloping the brain and spinal cord.

denticulate ligaments

extensions of pia mater that secure cord to dura mater laterally

filum terminale

single thin thread of fibrous tissue at end of conus medullaris in the center that attaches to coccygeal ligament

posterior root

axons of sensory neurons

posterior root ganglion

anterior root

axons of motor neurons

spinal nerve

cauda equina

bundle

cervical plexus

C1-C5

brachial plexus

C5-T1

lumbar plexus

T12- L4

sacral plexus

L4- S4

phrenic nerve

neon purple (on neck)

superior trunk

yellow

middle trunk

orange

inferior trunk

red

lateral cord

pink

medial cord

purple

posterior cord

blue

musculocutaneous nerve

median nerve

ulnar nerve

axillary nerve

dives deep near teres major

radial nerve

suprascapular nerve

Branches off the superior trunk

Seen on cadavers or picture

Subscapular nerve

genitofemoral nerve

Wishbone of the leg

lateral femoral cutaneous nerve

femoral nerve

saphenous nerve

posterior femoral cutaneous nerve

sciatic nerve

obturator nerve

common fibular nerve

tibial nerve