Exp 19 Flashcards
Three membranous coverings or?
Meninges
The outermost of three membranous coverings or meninges, of the spinal cord is the tough, skinlike ?
Dura mater
Deep to the dura mater
Much THINNER meninx, the spidery ?
Arachnoid
Space deep to the arachnoid is ?
Subarachnoid space
Deepest meninx
Pia mater
Deep groove on the anterior surface of the spinal cord
Anterior median fissure
Shallower groove of the spinal cord
Posterior median sulcus
Group of separate nerves resembling a horse’s tail ?
Cauda equina
The two lateral sections of gray matter are joined by a transverse called?
Gray commisure
Center of the gray commissure is the_________
Central canal
The canal contains?
CSF in life but contains preservative in prepared specimens
Lateral of gray matter exhibits ?
Anterior gray horn
Posterior gray horn
Additional lateral extension is called ?
Lateral gray horns
Columns of white matter surround the central gray matter area. These include the ?
Anterior white column
Posterior white column
Lateral white column
Columns are sometimes called ?
Funiculi
There are ____ pairs of spinal nerves communicating w/ the spinal cord
31
C1 through C8
Cervical spinal nerves
T1 though T12
Thoracic spinal nerves
L1 through L5
Lumbar spinal nerves
S1 through S5
Sacral spinal nerves
C or Cx
Coccygeal spinal nerves
Each spinal nerve communicates with the cord by means of two separate _________
Spinal nerve roots
Includes efferent fibers
Ventral (anterior) spinal nerve root
Includes afferent fibers
Dorsal (posterior) spinal nerve root
Nuclei of diff. neurons form an area of gray matter in the dorsal root called ?
Dorsal root ganglion
Correct order for the meninges of the brain (from superficial to deep)
Dura mater-arachnoid-pia mater
Cauda equina is ?
A bundle of separate nerves
Network of nerve fibers is called ?
Ganglion
Large group of neuron cell bodies are likely to be found in the ?
Dorsal root ganglion
