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Spinal Nerves

Anatomy & Physiology Test 3

QuestionAnswer
Cervical Enlargement Thicker section of spinal cord due to nerves from the upper limb
White Matter Contains myelinated axons
Lumbar Enlargement Thicker section of spinal cord due to nerves from the lower limb
Dorsal Root Ganglia Cell bodies of sensory neurons located outside central nervous system
Endoneurium Connective tissue surrounding axons
Epidural Space Space between the dura mater and spinal cord
Ventral root Motor nerve fibers exit the spinal cord along this root
Perineurium Connective tissue around fascicle
Terminus Filum Anchors spinal column so it can't move up and down in vertebral column
Medullary Cone (conus medullaris) Tapered end of spinal cord
Dura mater Loose fitting outermost meningeal layer
Gray mater Contains very little myelin. Mostly contains somas, dendrites, and nonmyelinated axons
Cauda Equine Bundles of spinal nerves (L2-S5) that extend past end of spinal cord
Anterior Gray Horn Contains large somas of motor neurons
Denticulate Ligaments Prevents side to side movements of spinal cord in vertebral column
Subarachnoid Space Cerebrospinal fluid is found in this space
Dorsal Root Carries sensory nerve fibers to spinal cord in vertebral column
Columns Bundles of axons running up and down the spinal cord
Created by: Hsiden