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BMS 208 Exam 3
Spinal Cord
11
Anatomy
Undergraduate 2
03/09/2009

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Term
Dura Mater
Definition
The "Durable" outer-most portion of the spinal cord
Term
Arachnoid Mater
Definition
Thin middle layer of the spinal meninges. Celephane-like. Subarachnoid space is filled with cerebrospinal fluid
Term
Pia Mater
Definition
Layer lying directly on the brain and spinal cord. Inner most.
Term
Anterior Median Fissure
Definition
The "Buttcrack" on the front of the spinal cord.
Term
Posterior Median Sulcus
Definition
the middle-most fold on the rear (posterior) region of the spinal cord. In the white matter.
Term
Central Canal
Definition
Small dot in the middle of the spinal cord, where the spinal nerves run.
Term
Spinal Nerve
Definition
"Two way street" Where the ventral root and the dorsal root meet.
Term
Dorsal root
Definition
Always contains a ganglion. Usually on top.
Term
Ventral root
Definition
Underside.
Term
Grey Matter
Definition
Inner most region where the horns lie. Grey because it contains cell bodies, and is unmyelinated
Term
White Matter
Definition
White outer region of the spinal cord. White because it is myelenated and contains no cell bodies.
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