lectures 1/2 Flashcards
ROD inner segment
has cell nucleus and mitochondria
ROD outer segment
light sensitive rhodospin
night vision?
ROD
CONE inner segment
cell nucleus and mitochondria
Cone outer segment
light sensitive lodospin
colours?
cone
refraction
at the cornea / lens
power at cornea is greater, but lens can change its shape
greatest visual acuity
central fovea
optic disc
emerging retinal arteries
blind spot
fovea has
only cones
more cones where
in central retina
more rods in
peripheral retina (movement)
Rhodospin Rods or cones
rods
iodopsin rods or cones
cones
left visual field projects to
right cortex
thalamus contains
lateral geniculate nucleus
dorsal stream
to parietal
orient
where/how am I
ventral stream
to temporal
what, object recongition
adducting eye does what
depresses eyeball
adbucted eye does what
intorsion of eyeball
head tilted to left, wheres right n left eye
right eye extorted inferior oblique
left eye intorted superior oblique
motor cranial nerve receives
input from primary motor cortex via corticobulbar tract
eye controlled by
frontal eye fields
ascending MLF
connects MLF and occculmotor
VOR
deciding MLF
medial vestibulospinal tract
types of volitional saccades
anti saccade
memory
predictive
what happens in superior colliculus
from retina goes through visual to motor layer
vertical gaze
coronation of CNIII and IV
vertical gaze centre goes were
CN III (to superior n inferior rectus) and IV *(S0)
what coordinates accommodation
pretectal area
what sends projections to ciliary mm
dinger westphal
SVE glosso
pharyngeal mm
GVE glosso
parotid gland
GVA glosso
gag reflex
SVA glosso
posterior 1/3 tongue
GSA glosso
pharynx, posterior oral cavity
SVE GVE GVA SVA GSA
nucleus types glosso
ambiguus inferior salivary solitary solitary solitary
SVE vagus
pharyngeal mm
GVE vagus
thoracic / ab larynx
GVA vagus
thoracic / ab / aortic arch
GSA vagus
meninges, pharynx, larynx
GVE
GVA
SVA
GSA
vagus nucleus
ambiguous / dorsal
solitary
ambiguus
spinal
corticobublar tract for trap LMN do what
cross over
corticobublar tract for SCM LMN do what
stay on same side
CN IX X Xi exit
jugular foramen
hypoglossal nerve
CN XII
intrinsic mm tongue
hypoglossal
UMN projections to LMN in brainstem are ____ EXCEPT for ____
bilateral
LMN to genioglossus
what protrudes tongue
genioglossus
reticular formation
lat zone
med zone
afferent
efferent
substance nigra
control of movement
ventral tenemental area
projects to prefrontal cortex
limbic structures
noradrenergic signalling
projects to thalamus / forebrain
serotonergic signalling
projects to thalamus / cortex, basal ganglia, brainstem
acetylcholine
projects to thalamus / cortex
tegmentum of pons
histamine
projects to thalamus / cortex
tegmentum of pons
arousal alertness
petrous part of temporal bone
cochlea
labyrinth
where peri vs endo
peri is between bony an membranous labyrinth
epi is within membranous laby
transducer
hair cell
crista
ridge in ampulla where hair cells are
anterior - posterior movement
utricle saccades
medio lateral movemets
utricle
saculle
superior inferior movement
medial vestibular nuclei
rotational (semi circular canals)
lateral vestibular nuclei
liner (otolith)
maintenance of posture
vestibulospinal reflex
lateral vestibuospinal tract
stabilization of head
vestibulcervical reflex
medial vestibulospinal tract
Nystagmus
acceleration of head to left
VOR moves eyes right
Resets LEFT
(NYSTAGMUS)
vestibular nuclei not working what happens
that eye won’t move