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27 Cards in this Set
- Front
- Back
prevents hyperextension
covers and connects anterior sides of vertebral bodies attaches to vertebral bodies and intervertebral discs In neck, may be torn in whiplash injuries |
Anterior Longitudinal Ligament
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Prevents hyperflexion
Within the vertebral canal, connects to posterior sides of vertebral bodies |
Posterior Longitudinal Ligament
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Interconnects tips of all spinous processes.
Continuation is Ligamentum Nuchae |
Supraspinous Ligament
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Extra-thick, expanded portion of supraspinous ligament in neck.
From spine of C7, extends both posteriorly and upward. Runs from cervical spines to base of skull, expanding posteriorly to external occipital protuberance. Serves as central septum between right & left deep back muscle layers of neck |
Ligamentum Nuchae
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Span between central portions of adjacent spinous processes
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Interspinous Ligaments
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Strongest ligament between adjacent vertebrae
Paired, individual ligaments that connect adjacent vertebral lamina Located within vertebral canal-deep to (anterior side of) intervertebral facet joints, at posterior border of intervertebral foramen. Has numerous elastic fibers-allow for stretch of ligament during flexion of vertbreall column |
Ligamentum Flavum
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Area between bone of vertebral canal and dura mater.
Filled with fat. Contains extensive venous plexus. |
Epidural Space
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Outermost layer of meninges, strongest layer.
Forms continuous tube around spinal cord. Attaches at foramen magnum down to S2, in sacrum thru sacral hiatus and attaces to coccyx. Lateral extensions of this surround exiting spinal nerves. Attach to bony margins of intervertebral foramen. Becomes continuous with epineurium. Serves to anchor & stabilize spinal cord within vertebral canal |
Dura Mater
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Thin cord narrowed down from dura mater
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Coccygeal ligament
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Inside of dura mater.
Separated from from next deeper meningeal layer by subarachnoid space. Extends laterally around spinal nerves-blends with connective tissue sheath of nerve as it exits vertebral column. |
Arachnoid Mater
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Potential space between arachnoid mater & dura mater.
Usually only contains thin layer of lubricating fluid. If dura damaged, space may fill with blood |
Subdural Space
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Filled with cerebrospinal fluid.
Spanned by arachnoid tuberculae |
Subarchnoid Space
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Serves as shock absorbing cushion
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Cerebrospinal fluid
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Thin weblike filaments
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arachnoid trabeculae
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Innermost covering of spinal cord
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Pia mater
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Tooth-like lateral extensions of pia mater (21 pairs)
Located on lateral sides of spinal cord, between dorsal and ventral nerve rootlest. Extend from pia, thru arachnoid, and attach to dura mater. Serve to anchor lateral sides of spinal cord. |
denticulate ligaments
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Thin cord of pia that extends downward from inferior end of spinal cord.
Terminates by attaching to coccygeal ligament |
filum terminale
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In median fissure of cord on anterior (ventral) side
In pia mater, supplies spinal cord |
anterior spinal artery
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Along posterior (dorsal) side of cord (2)
In pia mater, supplies spinal cord |
posterior spinal arteries
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Arterial inpurs to anterior & posterior spinal arteries
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vertebral artery & segmental arteries
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Begins at foramen magnum of skull.
Continuation of brain stem. |
Spinal Cord
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conical tapered termination of spinal cord
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conus medullaris
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L1-L2 vertebral level
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End of spinal cord
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Done between L3-L4 or L4-L5
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Spinal tap for cerebrospinal fluid
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Large mass of closely-spaced nerve rootlets in subarachnoid space below inferior termination of spinal cord
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cauda equina
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Area of spinal cord enlargement
1. Spinal levels C5-T1 2. Ventral rami from brachial plexus (upper limb) |
cervical enlargement
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Area of spinal cord enlargement
1. Spinal levels L2 to S3 2. Ventral rami from lumbar and sacral plexuses (lower limb) |
lumbosacral enlargement
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