l5 Flashcards
white matter in PNS is
nerves
grey matter in PNS
ganglia
cell in PNS
neuron (efferent afferent)
glia
size of afferent neuron + correlate
varies
correlate with conduction speed
correlate with tyoe of sensory receptor that connect
several bundle of axon call?
fascicles
endoneurium
axon
perineurium
fascile
epineurium
nerve
sensory include
visceral
special
somatic
somatic in sensory includes what receptors
extero (skin touch)
proprio (muscle joints)
intero (pain, temp, pressure)
vasculature
help o2 delivery
synapses between axon terminal and muscle call?
neuromuscular junction
viscaral motor control?
autonomic (mostly involuntary + subconcious)
- sympathetic + parasympathetic
roots
either sensory or motor
ramus
both sensory and motor
ventral rami of spinal nerve innervating ?
neck limb
network of nerve call
plexus
plexus
cervical
brachial
lumbar
sacral
cervical plexus func
sensory neck chest
motor neck diaphragm
branchial plexus func
sensory motor upper limb
sacrsl plexus func
skin muscle of thigh, lower leg
lumbar plexus func
abdominal genital area
parasympathetic number?
III VII IX X
olfactory receptor locate
olfactory epithelium in nasal cavity
neuron detect stimuli location
above cribriform
is optic nerve in cns
no
oculomotor function
roll eyeball, eyelid closures
pupil constriction
trigeminal has major somatosensory nerve for?
face, top scalp, nasal, oral cavity
tregimenal ganglion equivalent to
dorsal root ganglion
mandibular nerve (of tregimental nerve) equivalent to?
ventral roots
axons of LMN (from cell bodies in brainstem - pons)
for muscles travel in mandibular
trigeminal nerve has 3 distinguished branches
opthalmic (top)
maxilary (middle)
mandibular (lower)
facial func
somatic motor = facial expression
visceral motor = saliva, ear glands
special sensory = 2/3 anterior tongue
2 branches in vestibulocochlea
vestibular branch
cochlear branches
GLOSSOPHARYGEAL emerge from..?
medulla lateral to olives
GLOSSOPHARYGEAL has somatosensory sensation from
back oral cavity and upper pharynx)
GLOSSOPHARYGEAL carry?
visceral sensation, chemoreceptors (co2 + ph) and baroreceptors (blood pressures) in carotid body + sinus
- taste (back third)
- visceral motor (saliva)
brain stem special name
highway for all information to cross, interpret, go where it needed
olfactory receptor locate at?
olfactory epithelium in nasal activity
olfactory neuron detect stimuli
above cribifrom, axon travel through bones
olfactory neuron relay stimuli
form olfactory tracts into cerebrum
optic chiasm
fibres cross here before entering cns via optic tract
damage before chiasim?
lost 1 eye vision
damage after chiasm (eg stroke)
lost left/right side of both eyes
nerve
bundle of axon in pns
tract
bundle of axon in cns
oculomotor function
4 extrinsic eye movements
up
down
medially
rotation
-> also eyelid closure
- visceral -> pupil constriction
trochlear function function
one extrinsic eye muscle
abduscent function
one extrinsic eye muscle lateral
trigeminal has nerve attach in 3 distinguish?
opthalmic (top)
maxilary (middle)
mandibular (lower)
vestibulocochlea enter brainstem at?
medulla pons border
vagus visceral sensory in charge of
sensory from visceral tissue in
thoracic
abdominal
chemoreceptors
stretch receptor
- > let brain know internal environment of body
vagus general somatosensory in charge of
sense from pharynx, larynx, meninges
vagus motor visceral in charge of
airways, digestive, cardiovascular
vagus somatic motor in charge of
muscle from
phrynx, larynx, soft palate epiglottis
spinal accessory function
2 neck muscle
spinal accessory trapeziud: tilt head back, side, shoulder
sternocleidomastoid = rotate head jaw oppsite side
spinal accessory has cell bodies in
ventral horn
- > axon exit ventral root -> up in subarachnoid -> foramagnum -> cranium -> muscle
hypoglossa function
muscle tongue
