Anatomy Workshops Flashcards
where is the location of the third neurone in the somatosensory pathway for discriminative touch
thalamus
where do 85% of upper motor neurone axons decussate
the medulla oblongata
testing the actions of the biceps femoris tests what spinal root levels
C5, S1
what is saltatory conduction
jumping between the nodes of ranvier
what are schwann cells
myelinators of the PNS
contraction of what muscle against resistance tests C7 motor function of the radial nerve
triceps
weakness of right trapezius indicates a weakness in which nerve
spinal accessory
extension of the back tests which muscle aswell as testing posterior rami
erector spinae group
where is CSF in the spinal cord
central canal
what is the main sensory and motor component of the biceps (jerk) reflex
musculocutanous (C5,6) mainly C6
complete transection (LMN) injury of what nerve results in grade 0 power in extension movements of the arm
radial nerve
what supplies sensation to the skin of the suprapubic region
T12 spinal nerve
what supplies sensation to the skin of the 1st web space
L5 spinal nerve
what supplies sensation to the skin of the middle finger
median nerve
what supplies sensation to the skin of the heel
S1 spinal nerve
what are the output cells of the cerebellum
purkinje cells
what part of spinal cord/nerves give antereolateral sensation
anterior rami
what part of spinal cord/nerves give visceral sensation
visceral afferent (posterior rami)
what part of spinal cord/nerves contains only somatic motor and sympathetic axons
anterior roots and rootlets
what part of midbrain has a large anterior bulge
pons
which part of midbrain looks like mickey mouse
midbrain- cerebral aqueduct is the mouth
what is the worm in the brainstem
olivary nucleus of the medulla oblongata
interrupting the direct pathway of the basal ganglia causes what clinical sign
hypokinesia/ bradykinesia
what is the clinical symptom of demylination of the posterior column (MS)
loss of fine touch
would a lesion in the CST produce contralateral or ipsilateral symptoms
ipsilateral
what is the role of latissimus dorsi
upper limb adduction/ internal rotation
what contains fibres of fine touch and proprioception from upper AND lower limbs
dorsal column
what carries pain, temp and deep pressure fibres
spinothalamic tract
fibres within what tract cross at the decussation of the pyramids
lateral corticospinal tract
which part of the diencephalon which has an endocrine function
hypothalamus
what lies inferior to the part of the cerebral hemisphere concerned with vision
cerbellum
what matter contains axons but no cell bodies
white matter
occulusion of which artery would cause a CVA the pre central left gyrus
anterior cerebral
what specialised structures pierce the dura mater on order to transfer CSF to the venous system
arachnoid granunlations
what does the spinothalamic tract convery
pain
what does the dorsal column convey
fine touch, conscious proprioception
what does bocas
area do
language production
what does wernickes area do
language comprehension
where does vagus leave the cranium
jugular foramen
what is the last point supplied by the vagus nerve
splenic flexure
the sympathetic axons that supply the orbit pass through here
carotid canal
what type of axons pass through the foramen rotundum
sensory- CN V3
what type of axons leave the skull via the hypoglossal canal
motor- hypoglossal nerve
what is the path of the sympathetic nerve supply to the eye
T1 sympathetic trunk superior cervical sympathetic ganglion internal carotid plexus ciliary ganglion short ciliary nerve
what only normall exits in relation to the spinal cord (not brain) and can be accessed via the L3/4 interspace
extradual (epidural) space
what cranial nerve contains visceral afferents that originate within the carotid sheath
CN IX
what CN: crossed motor axons exit via the posterior aspect of the midbrain at its junction with the pons
CN IV
