-
11-22
The spinal cord
level .
It is
starts
surrounded
through
by
the
3 layers
Foramen
of
Magnum
Meniges
,
:
and ends at the
e
Spinal Cord
) Dura Mater
2) Arachnoid Mater
Outermost's Thichest Layer Right under the Sub-dural Space
- -
.
-
Blends with Periosteum -
Connected to Pia Mater & Spinal Chord .
↳ Periosteum
Epidural Space between Dura & .
-
More loose than other two
-Can be separated into Outer (Endosteal) Layer and Inner
(Meningeal)
Ends" at Foramen Magnum
Pia
Layer -
periosteum
3) Mater
close to
->
↳ Cranial Dura Endosteals Right under Subarachnoid
has two layers Meningeal Space
-
,
↳ to
)
Adheres
Mater
Arachnoid
-
↳
Spinal Dura is
single-layered , Meningeal
-
Inner Most
Layer
Subarachnoid
The
Spinal Chord has two areas of Enlargements where the nerves spread The
Space is the
only true one's
- -
out to innervate the
upper s lower limbs . Contains Cerebrospinal Fluid .
1) Cervical Enlargements 2) Lumbar
Enlargements
↳
Supplies upper limbs ↳
Supplies lower limbs
"
⑬
-
The Spinal Chord ends at the Filum Terminale which is an extension of the
,
2
Pia Mater ,
that fixates the spinal chord
by anchoring it to the
coccyx .
②
-
Grey Matter is one of the components of the spinal cord ,
and forms a
1) These are called Horns
,
each horn
may have a
big H in the middle of the chord . The tips of the H form the Anterior certain function
and Posterior Horns ,
and are connected
by the Gray Commisure in the middle .
2) Spinal Lord gets thinner
going
down .
↳> Central Canal lies in center of commisure .
3) Lateral horns are
present in the Thoracic
, Upper
↳ The Amount of to the of innervated muscle Lumbar Sacral of the Spine
Grey Matter is related amount .
, Segments
↳ Contains Nerve Cells ,
Blood Vessels , Neuroglia .
↳ central component for Sympathetic division .
4)
Grey Matter White Matter ratio
changes according
:
-Nerve
Grey Matter
large' the needs of the
cells in are multi-polar ,
and pass out to
body .
from the Anterior roof as < -
efferents & y - efferents .
11-22
The spinal cord
level .
It is
starts
surrounded
through
by
the
3 layers
Foramen
of
Magnum
Meniges
,
:
and ends at the
e
Spinal Cord
) Dura Mater
2) Arachnoid Mater
Outermost's Thichest Layer Right under the Sub-dural Space
- -
.
-
Blends with Periosteum -
Connected to Pia Mater & Spinal Chord .
↳ Periosteum
Epidural Space between Dura & .
-
More loose than other two
-Can be separated into Outer (Endosteal) Layer and Inner
(Meningeal)
Ends" at Foramen Magnum
Pia
Layer -
periosteum
3) Mater
close to
->
↳ Cranial Dura Endosteals Right under Subarachnoid
has two layers Meningeal Space
-
,
↳ to
)
Adheres
Mater
Arachnoid
-
↳
Spinal Dura is
single-layered , Meningeal
-
Inner Most
Layer
Subarachnoid
The
Spinal Chord has two areas of Enlargements where the nerves spread The
Space is the
only true one's
- -
out to innervate the
upper s lower limbs . Contains Cerebrospinal Fluid .
1) Cervical Enlargements 2) Lumbar
Enlargements
↳
Supplies upper limbs ↳
Supplies lower limbs
"
⑬
-
The Spinal Chord ends at the Filum Terminale which is an extension of the
,
2
Pia Mater ,
that fixates the spinal chord
by anchoring it to the
coccyx .
②
-
Grey Matter is one of the components of the spinal cord ,
and forms a
1) These are called Horns
,
each horn
may have a
big H in the middle of the chord . The tips of the H form the Anterior certain function
and Posterior Horns ,
and are connected
by the Gray Commisure in the middle .
2) Spinal Lord gets thinner
going
down .
↳> Central Canal lies in center of commisure .
3) Lateral horns are
present in the Thoracic
, Upper
↳ The Amount of to the of innervated muscle Lumbar Sacral of the Spine
Grey Matter is related amount .
, Segments
↳ Contains Nerve Cells ,
Blood Vessels , Neuroglia .
↳ central component for Sympathetic division .
4)
Grey Matter White Matter ratio
changes according
:
-Nerve
Grey Matter
large' the needs of the
cells in are multi-polar ,
and pass out to
body .
from the Anterior roof as < -
efferents & y - efferents .
