Spinal Cord

Front 1

How long is the spinal cord?

What encases it?

Back 1

45 cm

vertebral foramina

Front 2

the spinal cord decreases in diameter and terminates at the____________

Back 2

Filum Terminale

Front 3

2 fissures
1-________ __________ _________

2-________ __________ __________

which is wider?

Back 3

posterior median suculus


anterior median fissure--widest

Front 4

How is spinal cord divided?

Back 4

into 31 segments
c1-c8
t1-t12
l1-l5
s1-s5

Front 5

part of spinal cord
cell bodies exterior to spinal cord contain sensory neuron cell bodies whose axons project out thru interverebral foramina to form dorsal roots and ventral roots

Back 5

dorsal root ganglia

Front 6

distal root fibers of dorsal roots and ventral roots wound together

Back 6

spinal nerves

Front 7

overlapping membranes that provide protection to the spinal cord

Back 7

spinal meninges

Front 8

outer most meningeal
epidural space

Back 8

duramater

Front 9

space between duramater and vertebral foramina

Back 9

epidural space

Front 10

medial meningeal layer
subdural space
subarchoid space

Back 10

archoid

Front 11

space between duramater and arachoid

Back 11

subdural space

Front 12

space between arachoid and pia mater
filled with network of collagen
filled with cerebrospinal fluid
where spinal tap occurs

Back 12

subarachoid space

Front 13

5ml extracted between L3 and L4

Back 13

spinal tap

Front 14

innermost meningeal layer
direct contact with spinal cord and tissues

Back 14

pia mater

Front 15

Inner region of gray matter is shaped like a ?

What is the center with cerebrospinal fluid?

Back 15

butterfly

Central canal

Front 16

projections of gray matter into white matter
3- types

Back 16

Horns

Front 17

horn with cell bodies for somatic and autonomic sensory neurons

Back 17

posterior gray horn

Front 18

horn with cell bodies for somatic and motor neurons

Back 18

anterior gray horn

Front 19

horn that contains autonomic motor neurons

Back 19

lateral gray horn

Front 20

surround central canal in gray matter and contains interneurons

Back 20

gray commissures

Front 21

surrounds gray matter
divided into ascending and descending tracks
relays impulse to and from brain

Back 21

white matter

Front 22

formed by the connection of ventral and dorsal roots
How many pairs?
identified by?

Back 22

Spinal nerves
31
adjacent vertebrae

Front 23

spinal nerves are encapsulated by:
1-outer collagen layer
2-surrounds fascicles
3-surrounds individual axons within fascicle

Back 23

1-epineurium
2-perineurium
3-endoneurium

Front 24

a branch in a spinal nerve

Back 24

ramus

Front 25

branch in the spinal nerve -sensory motor neuron of back muscles/skin

Back 25

dorsal ramus

Front 26

branch in spinal nerve
semspry motor neuron of sides, body cavities and limbs.

Back 26

ventral ramus

Front 27

complex interwoven network of spinal nerves-4 types

Back 27

nerve plexus

Front 28

nerve plexus
c1-c5 ventral rami for neck
phrenic nerve to diaphram for breathing

Back 28

cervical plexus

Front 29

nerve plexus
c5-t1 ventral rami
pectoral girdle and upper limbs

Back 29

Brachial plexus

Front 30

nerve plexus
t12-L4 ventral rami
pelvic girdle and upper limbs

Back 30

Lumbar plexus

Front 31

nerve plexus
L4-s4
lower limbs

Back 31

Sacral plexus

Front 32

spinal nerve communication

receives stimulus from sensory neuron

Back 32

Posterior Gray Horn

Front 33

Spinal nerve communication

processes stimulus and sends response to either the anterior gray horn or the white matter

Back 33

gray commisseur

Front 34

spinal nerve communication
receives response from gray commisseur;
then goes to ventral rami then to nerve plexus

Back 34

Anterior gray horn

Front 35

spinal nerve communication
receives response from gray commisseur then to ascending tracks to brain

Back 35

white matter

Front 36

-Conduction-white matter relay to and from brain
-Locomotion for generating repetitive skeletal motions
-reflexes

Back 36

Functions of Spinal cord