Spinal Cord Flashcards
What is in the Extradural (epidural) space ? Where is it?
Between Wall of the Vertebral Canal and Dura Mater. Contains fat and internal vertebral venous plexuses
Cerebrospinal Fluid (CSF) location and function
Cerebrospinal Fluid (CSF) is found within the subarachnoid space
CSF bathes the spinal cord, and cushions it against forces experienced by the vertebral column
Dorsal Roots are ?
Sensory Nerves
Ventral Roots are ?
Motor Nerves
Dorsal+Ventral Roots are?
Spinal Nerves
Spinal nerves divide into what?
Rami dorsal and ventral rami
Rami contain what kind of nerves ?
both sensory and motor
What do roots carry?
Either sensory or motor nerves
Whats a spinal cord segment?
Spinal Cord Segment: A portion of the spinal cord giving rise to the roots of spinal nerves.
Where do dorsal rami and ventral rami supply?
Dorsal (posterior) rami—travel towards the posterior surface of the body—motor nerves supply intrinsic back muscles; sensory nerves supply the skin of the back
Ventral rami supply structures located anterior to vertebral bodies— motor nerves to trunk muscles, extremity muscles, sensory nerves to skin, etc.
What are the roots of the Lumbar and Sacral Nerves?
Cones
Where does the Adult Spinal Cord end ?
Between the L1 and L2 Vert
How far does the Dural Sac extend ?
As far as S2
What is the Space between the Medullary Cone and the Termination of the Dural Sac called?
Lumbar Cistern ( around L2)
What do ventral rami in the Cervical and lumbar/sacral region form?
In the cervical and lumbar/sacral region– ventral rami form a nerve plexus (plexus= network) to supply the muscles and skin of the extremities
Brachial plexus- upper extremity
Lumbosacral plexus-lower extremity
