Neuro (Exam 3) Flashcards

1
Q

Central Nervous System (CNS)

A

brain and spinal cord

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2
Q

Peripheral Nervous System (PNS)

A

12 cranial nerves
31 pairs of spinal nerves
Autonomic Nervous System (ANS)
Somatic Nervous System (SNS)

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3
Q

How many cerebral hemispheres are there?

A

2

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4
Q

Frontal Lobe

A

personality, behavior, emotions, intellectual functions, skilled movement

Broca’s area!!

Primary motor cortex

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5
Q

Broca’s area

A

left speech-motor

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6
Q

Parietal Lobe

A

processing sensory data
postcentral gyrus

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7
Q

Occipital Lobe

A

vision and interpretation of visual data

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8
Q

Temporal Lobe

A

perception and interpretation of sounds and determination of source of sounds; smell

wernickes area!!

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9
Q

Wernickes area

A

left language-comprehension

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10
Q

Basal Ganglia

A

large bands of gray matter that form the subcortical associated motor system

help initiate and coordinate automatic movement of the body

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11
Q

Thalamus

A

brain relay station

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12
Q

Hypothalamus

A

maintaining homeostasis

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13
Q

Cerebellum

A

motor system which controls coordination of movement, equilibrium, posture, position sense of muscles and joints and body

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14
Q

Brainstem

A

midbrain, pons, and medulla

regulates heart rate, breathing, and swallowing

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15
Q

Crossover/Crossed Representation (CNS Pathways)

A

right cerebrum connects to left side of body and vice versa; left and right cerebral cortex

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16
Q

Left cerebral cortex receives…

A

sensory data from and controls the right side motor function

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17
Q

Right cerebral cortex receives…

A

sensory data from, and controls left side motor function

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18
Q

Descending Tracts (Motor)

A

lateral corticospinal tract (main voluntary motor, upper extremity motor pathways, are more medial)
ventral corticospinal tract (voluntary motor)

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19
Q

Ascending Tracts (Sensory)

A

dorsal columns (DC) (deep touch, vibratory, proprioception)
lateral spinothalamic tract (LST) (pain and temp)
ventral spinothalamic tract (VST) (light touch)

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20
Q

Spinal Nerves

A

mixed nerves; carry sensory (afferent) and motor (efferent) fibers

8 cervical
12 thoracic
5 lumbar
5 sacral
1 coccygeal

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21
Q

PNS carries sensory messages…

A

TO CNS FROM sensory receptors

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22
Q

PNS carries motor messages…

A

FROM CNS TO muscles and glands

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23
Q

PNS sends automatic messages…

A

TO internal organs and blood vessels

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24
Q

Somatic system (PNS)

A

carry motor and sensory info (skin, sensory organs, skeletal muscles)
voluntary muscle movements

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25
Autonomic Nervous System (PNS)
involuntary movements innervates smooth muscle **SYMPATHETIC** (*fight or flight*) **PARASYMPATHETIC** (*rest and digest*)
26
Deep Tendon Reflexes
LE: patellar, achilles, hamstring UE: triceps, biceps, brachioradialis
27
Superficial Reflexes
corneal abdominal cremasteric
28
Visceral Reflexes
pupillary response to light PERRLA
29
Pathologic Reflexes
Plantar reflex (*Babinski sign, positive to 24 months*)
30
Dermatome
cutaneous portion of spinal nerves
31
Subjective Data
HA head injury dizziness/vertigo/syncope any seizures tremors weakness problems with gait coordination numbness problems speaking or swallowing PCC environmental/occupational hazards
32
Subjective Data: Past Medical History
meningitis deformities cardiovascular, circulatory problems, HTN, aneurysm, CVA/stroke neurological disorder, brain surgery, residual effects
33
Subjective Data: Family History
neurological disorders Parkinson’s Alzheimer’s dementia MS ALS Stroke/CVA/TIA
34
Subjective Data: Social History
environmental and occupational hazards ability to care for themselves sleeping and eating patterns ETOH street drugs
35
Subjective Data: History of Older Adults
gait ADLs (*feeding, continence, transferring, toileting, dressing, bathing*) instrumental ADLs (iADLs) hearing loss development of tremor fecal/urinary incontinence
36
iADLs Examples
using phone shopping preparing food housekeeping doing laundry using transportation handling meds handlings finances
37
Objective Data: Mental Health Assessment
judgement abstraction memory-cognitive LOC **completed through entire exam**
38
Lethargy
drowsy but opens eyes, responds to Qs then falls asleep
39
Obtunded
opens eyes, responds slowly and is somewhat confused
40
Stuporous
arouses from sleep after painful stimuli, verbal responses are slow/absent, lapses into unresponsive state after stimuli
41
Comatose
remains unarousable with eyes closed even with painful stimuli
42
Glascow Coma Scale
objective assessment that defines LOC; best response is 15, comatose client is 8 or less, totally unresponsive client is 3
43
CN Mneumonic for names
**O**nly **O**ne **O**f **T**he **T**wo **A**thletes **F**elt **V**ery **G**ood **V**ictorious **A**nd **H**ealthy
44
CN Mneumonic for nerve types
**S**ome **S**ay **M**arry **M**oney **B**ut **M**y **B**rother **S**ays **B**ig **B**rains **M**atter **M**ost *S=sensory, B=Mixed, M=Motor*
45
CN 1 Olfactory
**not routinely tested** NORMAL: patient identifies common odors accurately TEST IF: **reports loss of smell, head trauma, suspected intracranial lesion**
46
CN II Optic
**tested in 5 ways** visual acuity (*snellen chart for distance, rosenbaum chart for near vision*) color (*ishihara plates for red-green c.b that assesses color vision*) visual fields (*peripheral vision*) pupillary reflexes (*direct and consensual response, PERRL*) fundoscopy to determine color, size, and shape of optic disc (*evaluate optic disc and cup*)
47
Testing Peripheral Vision
ask patient to look directly at you wiggle one finger in each of the 4 quadrants ask patient to say “now” as wiggling finger is first seen
48
PERRL vs PERRLA
test accommodation (CN II) vs test accommodation AND convergence (CN II and III)
49
CN III, IV, VI (Oculomotor, Trochlear, Abducens)
cardinal fields of gaze **tested together** conjugate movements of the eye H-pattern vs star pattern can perform convergence test if not performed with CN II cover/uncover test
50
CN V Trigeminal Motor Function
assess muscles of mastification by palpating temporal and masseter muscles as a person clenches his or her teeth **masseter, temporalis, buccinator, zygomaticus**
51
CN V Trigeminal Sensory Function
with a persons eyes closed, test light touch sensation by touching a cotton wisp (light touch) to designated areas on a persons face (forehead, cheeks, chin) sharp vs dull
52
CN V Trigeminal
assess corneal reflex if person has abnormal facial sensations or abnormalities of facial movement (blink response) test all 3 divisions (**ophthalmic, maxillary, mandibular**)
53
CN VII Facial
sensory: taste anterior 2/3 tongue motor: innervates muscles of facial expression; **tell patient let’s make some funny ahh/mad faces, have them raise eyebrows, have patient close eyes and don’t let nurse open them, puff out cheeks, smile!!**
54
CN VIII Vestibulocochlear (Acoustic)
**innervates the hearing apparatus of the ear** auditory acuity (*whisper test*) conductive vs sensorineural hearing bone conduction vs air conduction (*webber and rinne tests*) vestibular (*balance*)
55
Auditory Acuity (Whisper Test)
stand 45° behind patient have patient cover opposite ear 2-3 ft away, whisper 3 numbers or a word ask patient to repeat
56
Webber Test
**512 Hz Tuning fork** tests for localization normal=midline
57
Rinne Test
**512 Hz Tuning fork** tests for conduction *air>bone is normal* *bone>air means conductive hearing loss*
58
CN IX Glossopharyngeal
**tested with CN X** sensory supply to the soft palate *taste to posterior 1/3 of tongue* GAG REFLEX
59
CN X Vagus
**tested with CN IX** motor supply to pharynx SAY AHHHHH (uvula and soft palate rise to midline) no deviation of uvula
60
CN XI Spinal Accessory
tests strength of sternocleidomastoid (SCM) and trapezius muscles *ask patient to turn head against resistance for SCM* *ask patient to shrug shoulders against resistance for trap*
61
CN XII Hypoglossal
**test strength tongue** ask patient to stick tongue out, observe for deviation (weak muscles) hold tongue to cheek against resistance ask person to say “light, tight, dynamite” and note lingual speech (letters t, l, d, and n are clear)
62
Inspecting and Palpating Muscle Size
inspect all muscle groups for size nothing bilateral comparison
63
Inspecting/Palpating for Muscle Strength
test muscle groups of extremities, neck and trunk; giving person specific commands **also measures LOC**
64
Inspecting/Palpating Muscle Tone
normal tension in relaxed muscles **persuade person to relax completely and move each extremity smoothly through full range of motion, normally not mild, even resistance to movement**
65
Inspecting/Palpating Muscle Involuntarily Movements
normally none occur; if present, note location, frequency, rate and amplitude; note if movements can be controlled at will
66
Muscular Strength Grading (0-5)
0 (*no contraction detected*) 1 (*barely detectable flicker or trace of contraction*) 2 (*active movement with gravity eliminated*) 3 (*active movement against gravity*) 4 (*active movement against gravity and some resistance*) 5 (*active movement against resistance without evident fatigue, **normal***)
67
Objective Data: Cerebellar Function (Balance)
sternal nudge-can hold balance Romberg Test (*stand with feet together and eyes open and the closed*) **POSITIVE ROMBERG is when patient begins to sway which indicates *cerebellar ataxia, vestibular dysfunction, sensory loss***
68
Objective Data: Cerebellar Function (Gait)
tandem walking (*weight transfer, stride*) **note any abnormalities like shuffling or loss of arm swing**
69
Objective Data: Cerebellar Function (Rapid Rhythmic Alternative Movements/Accuracy)
pat knees with both hands play the piano touch thumb to finger tips on each hand (*precision finger tap*) finger and nose nose to finger (*point to point*) heel to shin
70
Testing for Deep Tendon Reflexes
**A:** Biceps Reflex **B.** Brachioradialis Reflex **C.** Triceps Reflex **D.** Patellar Reflex **E.** Achillles Reflex **F.** Check for Clonus *Jendrassik Maneuver*
71
Jendrassik Maneuver
distractive technique UE: *clench teeth, squeeze thigh* LE: *lock fingers and pull against the other*
72
Grading Deep Tendon Reflexes (0-5)
0: absent reflex, no response 1+: trace or only seen with reinforcement 2+: normal 3+: brisk, may indicate disease 4+: non sustained clonus (*repetitive vibratory movements*) 5+: sustained clonus
73
Testing Superficial Reflexes
abdominal cutaneous reflex Babinski Cremasteric
74
Babinski Reflex
absent in humans over 2 years dorsiflexion of great toe with or without fanning the other toes
75
Cremasteric Reflex
males only elicited by stroking inner part of thigh **normal=contraction of cremaster muscle that pulls up the ipsilateral testis**
76
Assessing Sensory (Ascending Tracts) System
ask person to identify various sensory stimuli in order to test intactness of peripheral nerve fibers, sensory tracts and higher cortical discrimination *routine screening procedures: testing superficial pain, light touch, and vibration in few distal locations, testing stereognosis* **complete testing of sensory system warranted in those with neurologic symptoms like localized pain, numbness, tingling or if any abnormalities are discovered**
77
Assessing Sensory System: Comparing Sensations on Symmetric Parts of Body
1. when you find definite decrease in sensation, map it by systemic testing in that area 2. proceed from point of decreased sensation toward sensitive area; ask person to tell you where sensation changes; you can map exact borders of deficient area and draw results on diagram 3. persons eyes should be closed during tests 4. take time to explain what will be happening and exactly how you expect the person to respond
78
Spinothalamic Tract (Pain)
spinothalamic!! tested by persons ability to perceive pinprick **compare symmetric points**
79
Spinothalamic Tract (Temperature)
test temp sensation only when pain sensation is abnormal; otherwise you may omit it because fiber tracts are the same **compare symmetric points**
80
Spinothalamic Tract (Light Touch)
spinothalamic!! apply wisp of cotton to skin in random order of sites and at irregular intervals including arms, forearms, hands, chest, thighs, and legs; ask person to say now or yes when touch is felt **compare symmetric points**
81
Dorsal Column Tract (Vibration)
DCT!! test persons ability to feel vibrations of tuning fork over bony prominences **check for bilateral comparison**
82
Dorsal Column Tract (Position/Kinesthesia)
DCT!! test persons ability to perceive passive movements of extremities **check for bilateral comparison**
83
Dorsal Column Tract (Tactile Discrimination/Fine Touch)
DCT!! tests also measure discrimination ability of sensory cortex
84
Dorsal Column Tract (Stereognosis)
DCT!! test persons ability to recognize objects by feeling their forms, sizes and weights
85
Dorsal Column Tract (Graphesthesia)
DCT!! ability to “read” a number by having it traced on skin
86
Dorsal Column Tract (Two-Point Discrimination)
DCT!! test ability to distinguish separation of 2 simultaneous pin points on skin
87
Dorsal Column Tract (Extinction)
DCT! simultaneously touch both sides of body at same points; normally both sensations are felt
88
Dorsal Column Tract (Point Location)
DCT! touch skin and withdraw stimulus promptly; ask person to put finger where you touched
89
SUMMARY CHECKLIST: NEUROLOGIC EXAM
**screening and complete..** - mental status - cranial nerves - motor function - sensory function - reflexes
90
Decorticate Rigidity (Posture Abnormality)
FLEXOR *arms are like “C’s” moves in toward spinal cord* **problems with cervical spinal tract or cerebral hemisphere**
91
Decerebrate Rigidity (Posturing Abnormality)
EXTENSOR *arms are like “E’s”* **problems with midbrain or pons**
92
Bacterial Meningitis
very serious and can be deadly; death can occur in as little as a few hrs **sudden onset of fever, headache, stiff neck**
93
Viral Meningitis
less severe; most people get better within 7-10 days on their own similar symptoms as bacterial
94
Aging Neurological Considerations
1. reduced fine motor coordination and agility 2. neuron loss resulting in loss of muscle tone and facial tone 3. neuron loss resulting in reduced muscle strength 4. slower reaction time 5. meds may impair gait 6. proprioception declines 7. shuffling may occur 8. reduced DTR **COGNITION IMPAIRMENT IS NOT NORMAL AGING**
95
Kernigs Sign
indicating presence of meningitis **knee and hip are flexed to 90°, extension of knee is painful or limited in extension**
96
Brudzinskis Sign (Meningitis)
severe neck stiffness causes a patients hip and knees to flex when neck is flexed
97
Health Promotion and Patient Teaching
reduce stroke deaths increase in awareness of early warning signs and symptoms of stroke reduce tobacco use increase activity increase BP control