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38 Cards in this Set
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CN V is called? it innervates? WIth Corticobulbar Nerve for speech which symmetry is affected?
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Trigeminal V BOTH motor and sensory
Innervates mastication and Sensory for facial, mouth, jaw Unilateral: INSIGNIFICANT BILATERAL: severly less articulatory precision |
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CN VII is called? It innervates? With corticobulbar for speech which symmetry would be affected?
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Facial VII Innervates; MOTOR&SENSORY
MVMNT: facial muscles(extrinsic &extrinsic ear muscles,stapedius) SENSORY: TASTE(anterior 2/3 of tongue) SYMMETRY: MIXED bilateral and contralateral- distortion of b, p,f,v symptom:drooling,residue in lateral sulci |
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CN VIII is called? it innervates? with corticobulbar symmetry what would be affected for speech?
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ACOUSTIC VIII SENSORY
FX: HEARING,BALANCE Equilibrium, orientation of head in space NO swallowing symptoms Speech symptom: Distortion of Resonance, LOW articulatory precision of all sounds over time |
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CN IX is called? it innervates? With corticobulbar symmetry what would be affected for speech?
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Glossopharyngeal IX : MOTOR & SENSORY
MOTOR: ELEVATION: palate, mvmnt pharynx, larynx, CONTROLS stylopharyngeus muscle=swallowing SENSORY: general sensation from palate, POSTERIOR 1/3) tongue& oropharynx TASTE: posterior 1/3 tongue and oropharynx EXCEPTION Neither bi or contralateral SWALLOWING SYMPTOM: ASPIRATION before & during swallowing SPEECH SYMPTOM: HYPERNASALITY |
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CN X is called? innervates? with corticobulbar symmetry what would be affected for speech and swallowing?
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VAGUS X : Motor & Sensory
BIlateral symmetry Motor: MUSCLES of SOFT PALATE, pharynx,larynx, BASE of tongue(palatoglossus) SENSORY: pharynx, larynx, TASTE: in EPIGLOTTIS, & pharynx Swallow symptom: In ability to cough, Aspiration during or after swallow, STASIS /residue in valleculae,posterior pharyngeal wall & pyriform sinuses Speech symptom: HYPERNASALITY, Breathiness & hoarseness, low pitch range, low vocal loudness |
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CN XI is called? It inneravtes? with corticobulbar nerve for symmetry it is?
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Accessory: MOTOR
MVMNT head and shoulders Mvmnt Palate, pharynx, larynx CONTRALATERAL INNERVATION |
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CN XII is called? It innervates?
With corticobulbar symmetry it affects speech and swallowing how? |
HYPOGLOSSAL: MOTOR
MVMNT all INTRINSIC muscles of TONGUE ALL EXTRINSIC muscles of TONGUE EXCEPT PALATOGLOSSUS (done by vagus X) Swallowing symptom: Low bolus consolidation, LOW anterior to posterior mvmnt of bolus, ORAL RESIDUE SPEECH symptom: IMPRECISE ARTICULATION of l, t, d, s, z, sh, ch,k, g |
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3 neuron pthway?
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from periphery to Cerebral CORTEX
VARIATION: light touch, pain, temp, vibration, proprioception, 1) receptors in SKIN: transmitted by spinal nerves through SPINAL CORD to SPINAL GANGLION(dorsal spinal root) 1st order sent centrally 2) SYNAPSE w/ 2nd order (fibers cross midline( lemiscus is a TRACT formed by 2nd order- ascends to thalamus 3) 3rd order located IN THALAMUS |
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AXONS IN CNS are?
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TRACTS
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AXONS IN PNS are?
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NERVES
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PTHWAY OF SENSATION?
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Receptors up to dorsal root ganglion up to LEMNISCUS (formed by 2nd order neuron) up to THALAMUS(3rd order)
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Lateral Spinothalamic TRACT mediates?
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PAIN AND TEMP
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LATERAL SPINOTHALAMIC TRACT PTHWAY?
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ENTER SPINAL CORD @ spinal root ganglion- travel UP or DOWN to DORSAL HORN or GRAY MATTER(1st order) synapse w/ 2nd order) crosses spinal cord- THEN ENTER LATERAL WHITE COLUMN(2nd order)
FIBERS ASCEND to VENTRAL POSTERIOR lateral nucleus in the THALAMUS AXONS synapse w/ 3rd order) that LEAVES thalamus THEN ASCEND to INTERNAL CAPSULE(BAsal ganglia) END in POST CENTRAL GYRUS in PARIETAL LOBE(area 3,1,2)(sensory strip) PRIMARY SOMATIC SENSORY AREAS OF BRAIN |
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LESION PRIOR TO 2nd order will be?
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IPSILATERAL
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LESION AFTER 2nd order is?
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CONTRALATERAL
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NAME 3 perceptions of PAIN
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1) fast :sharp prickly
2) SLOW: Burning(muscle pain)general area, unmylinated 3) Visceral/REFERRED PAIN: ACHY, removed from actual source EX> HEART= chest wall or inside left arm, misinterpreted true origin |
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1st order NEURON=
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DORSAL ROOT GANGLION(skin receptors
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2nd ORDER NEURON=
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Cross MIDLINE ASCEND to THALAMUS
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3rd order NEURON=
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THALAMUS to CORTEX
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Ventral SPINOTHLAMIC TRACT
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TOUCH SENSORY INFO : light touch pressure and tactile location
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WHAT IS PTHWAY OF VST?
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fibers synapse w/ dorsal gray horn of spinal cord
2) ASCEND to VST to BRAINSTEM ad posterior ventral nucleus of MIDBRAIN 3) ENDS in postcentral gyrus of parietal lobe some fibers branch of VST terminate on RETICULAR NUCLEI in brainstem the project to thalamus, hypothalamus and hippocampus. EXplains why sometimes have visceral and somatic responses (fainting) |
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LESION of PAIN AND TEMP LST result in?
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CONTRALATERAL SIDE
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LESION IN LIGHT TOUCH VST results in?
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2 routes either
IPSILATERAL: ascend with proprioception traces in the dorsal columns 2) CONTRALATERAL: ascend in crossed fibers of the VST BRANC extensively therefor touch not LIKELY to be abolished in an injury |
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Atopognosis
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ABILITY TO LOCALIZE
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HYPERASTHESIA
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INCREASED light touch
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HYPOASTESIA
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DECREASED light touch
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ANESTHESIA
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COMPLETE LOSS
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ANALGESIA
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PAIN AND TEMP COMPLETE LOSS
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HYPOGLESIA:
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PAIN AND TEMP DECREASED LOSS
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HYPERGLESIA
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INCREASED LOSS PAIN AND TEMP
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With sensory examination light touch and pain & temp are mediated by FIBERS of? which come from what?
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FIBERS of DORSAL ROOT of the SPINAL CORD which come from DERMATOMES
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IN PERIPHERAL INJURIES IMPAIRMENT OF TOUCH CORESSPONDS TO?
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DERMATOMAL ZONES
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IN PAIN AND TEMP the boundary of each segment has an overlap to ADJACENT NERVES
TRUE OR FALSE |
TRUE
so id t5 is sevred the t6 and t3 will carry sensation |
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Inability to LOCALIZE IS CALLED ? what type of lesion is this usually?
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ATOPOGNOSIS
USUALLY a parietal lobe lesion |
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two point discrimination is?
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ability to discriminate shortest distance between 2 tactile points on skin. (use caliper to test)
LOSS SUGGESTS PARIETAL LOBE LESION |
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to detrmine a lateralized loss you can do what type of stimulation?
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DOUBLE STIMULATION
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TRUE R FALSE
SENSORY PTHWAY or CORTICAL SENSORY loss frequently is seen with lesions that produce cerebral lg disorders |
TRUE
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If you have a LESION in cerebellum can it be corrected by visual compensation?
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NO visual compensation will not help if CEREBELLUM LESION
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