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The CNS is protected by…
Bones, membranes, and fluids
Brain
The skull protects the..
Spinal Cord
The vertebral column protects the….
3 layers that protect both the brain and spinal cord
Membranes/Meninges are…
Dura Mater
The outer most of the meninges is the…
Dura Mater structure
Fibrous CT
Appears white due to collagen
Contains many blood vessels and nerves
Arachnoid Mater structure
Thin, resembles spiders web
Lacks blood vessels and nerves
Pia Mater Structure
Very thin
Many nerves and blood vessels
Subarachnoid space and Central Canal
Cerebrospinal fluid is found in…. (2 places)
Epidural space
Space outside of the dura mater
Foramen Magnum
Spinal cord begins at the…
1st and 2nd lumbar vertebrae
The spinal cord ends at the…
31
The spinal cord contains __ segments
Pair, PNS
Each segment has a ____ of spinal nerves that branch out to parts of the body (___)
Gray matter
In a cross section of the spinal cord, the core contains…
White matter
Surrounding the unmeylinated core is…
Afferent/Sensory neurons
Gray matter
Axons
Posterior horn contains
Afferent/Sensory neurons
Axons
White matter
Dorsal root contains
Efferent/Motor Neurons
Gray matter
Cell bodies
Anterior horn contains
Efferent/motor neurons
Axons
White matter
Ventral root contains
Ascending tracts
Carry impulses to the brain
Sensory/Afferent neurons
Ascending tracts contains…
Descending tracts
Carry impulses away from the brain
Motor/Efferent neurons
Descending tracts contain
Lateral Horn
Between posterior and anterior horns
Anterior median fissure and posterior median sulcus
The two groves separating the spinal cord are…
Anterior Median Fissure
The deeper grove is…
Posterior Median Sulcus
The shallower grove is the….
Dorsal Root ganglion
Cell bodies of motor/efferent neurons
Ventral roots
Axons
White matter
Motor Neurons
Gray Matter
Cell bodies
Dendrites
Unmeylinated nerve fibers
Neuroglial cells
White matter
Axons
Myelinated fibers
Sensory/Afferent Neurons
Ascending
CNS+PNS
Unipolar
Efferent/Motor Neurons
Descending
CNS+PNS
Multipolar
Interneurons
Only CNS
Gray Matter
Multipolar
Dura Mater
1.
Arachnoid Mater
2.
3.
Dorsal Root
Pia Mater
4.
Ventral Root
5.
Body of Vertebra
6.
Epidural Space
7.
Subarachnoid space
8.
Spinal Nerve
9.
Dorsal Root Ganglion
10.
Spinal cord
11.
Epidural Space
12.
Arachnoid Mater
1.
Dura Mater
2.
Pia Mater
3.
Dorsal Root
4.
Spinal Nerve
5.
Ventral Root
6.
Subarachnoid space
7.
Spinal cord
8.
Epidural Space
+ 12.
Bone of Vertebra
10.
Dorsal Root Ganglion
11.
White Matter
1.
Gray Matter
2.
Lateral Funiculus
3.
Dorsal Root of Spinal Nerve
4.
Dorsal Root Ganglion
5.
Posterior Horn
6.
Anterior Horn
7.
Ventral root of Spinal Nerve
8.
Anterior Median Fissure
9.
Posterior Funiculus
10.
Posterior median sulcus
11.
Gray Commissure
12.
Central canal
13.
Lateral horn
14.
Anterior funiculus
15.
Spinal nerve
16.
Note 
Flashcard (28)