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Ch. 12
spinal cord and cranial nerves
23
Anatomy
Undergraduate 2
03/14/2013

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Cards

Term
Spinal Cord
Definition
extends from Foramen Magnum to 2nd Lumbar Vertebrae

Cervical enlargement; supplies upper limbs

Lumbar enlargement; supplies lower limbs
Term
Conus Medullaris
Definition
Term
Cauda Equina
Definition
Term
Pairs of spinal nerves
Definition
31 pairs
Term
Cervical spinal nerves
Definition
8 pairs
Term
thoracic spinal nerves
Definition
12 pairs
Term
lumbar spinal nerves
Definition
5 pairs
Term
Sacral spinal nerves
Definition
5 pairs
Term
Coccygeal
Definition
1 pair
Term
Dura mater
Definition
tough outter covering

thickest most superficial layer
Term
Arachnoid mater
Definition
middle layer

thin and wispy

spiderweb like appearance
Term
pia mater
Definition
innermost layer

bound to surface of brain and spinal cord
Term
filum terminale
Definition
anchors spinal cord to the coccyx
Term
Epidural
Definition
space outside dura

in spine; contains spinal nerve roots
Term
Subdural
Definition
space btw dura mater and arachnoid mater

in spine; contains small amount of serous fluid
Term
Subarachnoid
Definition
space btw arachnoid and pia mater

in spine; contain cerebrospinal fluid and blood vessels
Term
dentricular ligaments
Definition
attaches spinal cord to dura
Term
White matter
Definition
myelinated axons

in brain; deeper
in spinal cord; outer layer
Term
gray matter
Definition
unmyelinated axons

in brain; outer cortex and inner nuclei
in spinal cord; deeper
Term
Epineurium
Definition
surrounds entire nerve
Term
endoneurium
Definition
surround individual neurons
Term
perineurium
Definition
surround axon groups to form fascicles
Term
dermatome
Definition
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