Spinal cord Flashcards
Where does the spinal cord begin?
When the medulla oblongata exits the foramen magnum
Where does the adult spinal cord terminate?
Below the lower border of L1 vertebra
The enlargements of the spinal cord
Cervical, lumbar
Inferiorly, the spinal cord tapers of into which structure?
Conus medullaris
At the apex of the conus medullaris, the pia mater prolongs into which structure?
Filum terminale
Where does the filum terminale attach inferiorly?
Coccyx
The longitudinal fissures/furrows of the spinal cord
Anterior median fissure, posterior median sulcus, posterolateral sulcus, anterolateral sulcus, posteriorintermediate sulcus
How many spinal nerves attach to the spinal cord
31
By which structures do the spinal nerves attach to the spinal cord?
Anterior/ ventral/ motor roots
Posterior/ dorsal/sensory roots
The ventral and dorsal roots join to form what structure?
Dorsal/posterior root ganglia
The dorsal root ganglia give rise to which structures?
Spinal nerves
Which spinal nerves exit above their corresponding vertebra?
C1 to C7
Which spinal nerves exit below their corresponding vertebra?
Thoracic, lumbar, sacral and coccygeal nerves
Which spinal nerve does not have a corresponding vertebra?
C8
Gray matter: inner core or outer covering?
Inner core
White matter: inner core or outer covering?
Outer covering
The cervical and lumbar enlargements of the spinal cord correspond to the nerve supply of upper and lower extremities, respectively. T/F
T