SPINAL NERVES INTRO Flashcards
Vertebral segments that carry neuronal axons in the lateral grey columns
T1-L2/L3
Structure that carries neuronal axons in the DRG
Dorsal Horn “Substantia Gelatinosa” of all vertebral levels
Type of neuron in DRG
Unipolar
Where do ventral and dorsal roots perforate the dura
DRG
Where DRG of the 1st & & 2nd cervical nerves lie
Vertebral arch
Where spinal ganglia of sacral nerves are located
Vertebral canal
Where grey ramus communicans of the corresponding sympathetic ganglion join the spinal nerve portion
Ventral ramus
Vertebral segment where ventral rami contribute white rami communicans to corresponding sympathetic ganglions
From Lateral Horn of T1-L2/3
Pre-synaptic Visceral Efferent fibers
Ventral rami of T1-L2/3 contribute ______________ to corresponding ganglia, and receive ___________ from the ganglia
White ramus communicans
Grey ramus communicans
Portion where the recurrent meningeal n. arises from
Mixed spinal nerve
Segments of spinal cord where grey ramus communicans joins
T1-L2/3 Sympathetic Ganglions
Segments of spinal cord that contain pre-ganglionic efferent fibers of the sympathetic nerves
T1-L2/3
Vertebral segment where pelvic splanchnic nerves emerge
S2-S4 (Visceral Efferent)
Borders of IVF are
a. ANTERIORLY: IVD / PLL
b. POSTERIORLY: Lig Flavum / Z-joint
c. SUPERIORLY: Inf. Vertebral notch
d. INFERIORLY: Sup. Vertebral Notch
Structures located within IVF (3)
Spinal Nerve
Spinal Artery
Recurrent Meningeal N.
Type of neurons in Anterior Grey Column
Alpha, Beta, Gamma
T/F Recurrent meningeal nerves receive one or more communications from neighboring white ramus communican of T1-L2/3
??
All poss targets innervated by recurrent meningeal N. (2)
PLL
Lig Flavum
Upper cervical meningeal nerves are distributed to the cerebral dura mater of the posterior or anterior cranial fossa
Posterior cranial fossa
2 functions of nerve fibers passing through Ventral Root at T5 spinal cord
Somatic Efferent Visceral Efferent (Parasympathetic)
T/F Recurrent meningeal branches of spinal nerves are present at all vertebral levels
??
Name 3 ligaments with recurrent meningeal nerve innervation at L1 spinal cord level
PLL
Lig Flavum
Capsular Lig
Nerves distributed to the cerebral dura mater of posterior cranial fossa (4)
Recurrent meningeal N.
Vagus N.
Hypoglossal n.
C1-C3
Vertebral segments with Visceral Efferent fibers in Ventral Roots
T1-L2/3
