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28 Cards in this Set
- Front
- Back
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General shape of spinal cord in a cross section |
Oval (AP compression) |
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Depressions that lie on the anterior and posterior surface of the spinal cord |
Posterior median sulcus Anterior median sulcus |
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Where the spinal cord begins and ends in an adult |
From the foramen magnum of the skull, to between L1 and L2 roughly |
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The spinal cord goes to here in newborns |
The full length of the vertebral canal |
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Regions of the spinal cord |
Cervical Thoracic Lumbar Sacral Coccygeal |
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Spaces and structures surrounding the spinal cord from superficial to deep |
Vertebra Epidural space Dura mater Subdural space Arachnoid mater Subarachnoid space Pia mater |
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Hole down the middle of spinal cord |
Central canal |
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How the dura mater in the vertebral canal differs from dura in the cranial cavity |
Consists of one layer rather than two |
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What portion consists of dendrites, cell bodies of neurons, glial cells, and unmyelinated axons |
Gray mater |
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What portion is composed of myelinated axons |
White mater |
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Where grey mater is located and how it’s shaped |
Centrally H shaped or butterfly shaped |
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The anterior mass of gray mater that contain cell bodies of somatic motor neurons |
Anterior horns |
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From T1-L2 what structures contain the cell bodies of autonomic motor neurons? (Fight or flight responses) |
Lateral horns |
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Masses of grey matter that contain the axons of sensory neurons and cell bodies of interneurons |
Posterior horns |
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Horizontal bar of grey matter that surrounds central canal within the spinal cord |
Grey commissure |
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Fluid on central canal |
Cerebrospinal fluid |
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Where does white matter lie in relation to grey matter |
External |
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Three regions of the white matter of the spinal cord |
Posterior funiculus Lateral funiculus Anterior funiculus |
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Small attachments of a spinal nerve to the spinal cord |
Rootlets |
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Numerous small attachments of rootlets converge to form what |
Ventral (anterior) root Dorsal (posterior) root |
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Cell bodies associated with spinal nerves are found here |
Dorsal root gangalion |
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Spinal nerves are formed by the convergence of what within what |
Anterior and posterior roots within intervertebral foramina |
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Number of pair of spinal nerves |
31 |
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Regions of the spinal cord with spinal nerves associated with each region |
Cervicle: C1-C8 Thoracic: T1-T12 Lumbar: L1-L5 Sacral: S1-S5 Coccygeal region: CO |
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Collection of nerves at the bottom of the spinal cord resembling a horse tail |
Cauda equina |
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Two main branches of a spinal nerve |
Posterior ramus Anterior ramus |
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Branches of the spinal nerve associated with autonomic nervous system |
Rami communications (communicating rami) |
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Specific region of skin supplied by a single spinal nerve |
Dermatome |
