netters cards Flashcards
ventral rami location
anterior and lateral branches
ventral rami form ____ and supply the ______ and ____
plexuses
limbs and trunk
c1 to c7 exit ___ to the corresponding vertebrae
superior
T1 - Co exits ____ to the corresponding vertebrae
inferior
ventral roots carry _____ fibers with their cell bodies in the ________ of the cord
efferent/motor
ventral horn
ventral roots may contain _____ autonomic nerve fibers
presynaptic
dorsal roots carry ____ fibers with their corresponding bodies in the _____
afferent general and visceral sensory fibers
dorsal root ganglion
ventral and dorsal roots combine to form a _______ which exits through the _______ and divides almost immediately into _________
mixed spinal nerve
intervertebral foramen
mixed ventral and dorsal rami
dorsal rami location
medial and lateral branches (posterior?)
dorsal rami supplies the
skin and true/deep muscles of the back
dura mater is separated by the _______ from the ________
epidural space from vertebral periosteum
dura mater is attached to the margins of the _____ and _____
foramen magnum and posterior longitudinal ligament
dura mater extends from the ______ to the level of the ____
margin of foramen magnum to the level of S2
what anchors the coccyx to the dura mater?
external filum terminale
dorsal root sleeves
cover the spinal nerves before fusing with the epineurium
vascular layer of the spinal nerves
pia mater
pia mater suspends the final cord within the dural sac by lateral extensions between the anterior and posterior roots called
denticulate ligaments
dermatomes
well defined strip of skin extending from the anterior to the posterior midline, supplied by a single spinal nerve
level of c5
clavicle
level of T4
nipples
level of T10
level of umbilicus
level of L1
inguinal ligament
blood supply to anterior two thirds of the spinal cords and vertebral bodies
anterior spinal artery
supplies posterior one third of the spinal cord and vertebral bodies
posterior spinal arteries
spinal block
Introduction of an anesthetic directly into the CSF (inthesubarachnoidspace) utilizing a lumbar puncture. Onset of anesthesia is rapid <1 minute (unlike epidural anesthesia that may take up to 20 minutes). Subsequent leakage of CSF may cause a headache in some individuals.
epidural block
anesthetic injected into the epidural space that spreads superiorly to act on spinal nerves S2 - Co.
the ____ to which the anesthetic accents is affected by the amount of solution injected and the position of the patient
height
L3 dermatome
over the knee
“L3 over the knee”
T10 dermatome
T10 belly but TEN
sacral dermatomes
sit on sacral dermatomes
