Exam 4 Flashcards
Cerebral cortex
- center for highest functions
- thoughts, memory, reasoning, sensation, voluntary movement
Basal ganglia
- large bands of gray matter
- initiates/coordinates movement
Thalamus
main relay station for all senses
Hypothalamus
major respiratory center with basic vital functions
Cerebellum
- coiled structure under occipital lobe
- voluntary movements, equilibrium, mm tone
Brainstem
- central core of brain made of nn fibers
Spinal cord
- nervous tissue
- tracts that connect to brain and spinal nn
ANS communicates with
internal organs and glands
PNS
all nerve fibers outside CNS
Somatic nervous system
- communicates with sense organs and voluntary mm
- sensory and motor
Cranial nerve 1
olfactory - smell
Cranial nerve 2
optic - near and distant visual acuity, visual fields
Cranial nerve 3
Oculomotor
- EOM movements (6 cardinal positions)
- palpebral fissures
- PERRLA
Cranial nerve 4
trochlear
- EOM, palpebral fissure, PERRLA
Cranial nerve 5
trigeminal
- clench teeth, light touch on cheeks, forehead, chin
Cranial nerve 6
Abducens
- EOM movements, palpebral fissures, PERRLA
Cranial nerve 7
Facial: smiling, puffed cheeks, taste
Cranial nerve 8
vestibulocochlear: hearing
Cranial nerve 9
Glossopharyngeal
- uvula movement when patient says “ahh”
- gag reflex
Cranial nerve 10
vagus
-uvula movement when patient says “ahh”
- gag reflex
Cranial nerve 11
spinal accessory - shoulder shrug
Cranial nerve 12
hypoglossal - tongue symmetry
Nerve mnemonic
our old oak table top adds fun and gaudy vibes some holidays
Cranial nn function mnemonic
some say marry money but my brother says bad bitches marry money
AAOx4
alert to person, place, time, situation
Cranial nn III, IV, VI assessment
- eye movements
- pupillary light reflex
- PERRLA
- 6 cardinal positions
Increased intracranial pressure causes
sudden, unilaterally, dilated, and nonreactive pupils
Ptosis can occur with
myasthenia gravis or dysfunction of cranial n 3
Strabismus
deviated gaze or limited movement
Nystagmus
can occur with disease of visibular system, cerebellum, or brainstem
Cranial n. VII assessment
Note mobility and facial symmetry
- smile, frown, close eyes tightly, lift eyebrows, show teeth, puff cheeks
Abnormal facial n findings
loss of movement or asymmetry
- can occur with stroke or bells palsy
Cranial n. VIII assessment
test hearing by ability to hear normal conversation
Cranial nn IX, X assessment
- depress tongue with blade and say “ahhh”
- uvula and soft palate should rise midline
- tonsils should move inward
- absence of symmetry could mean stroke and risk of aspiration
Cranial n XII assessment
- have patient stick out tongue
- no tremors, midline
Cranial n XI assessment
- examine sternomastoid and trapezius mm for equal size and strength
- ask patient to rotate head against resistance applied to chin
- ask patients to shrug shoulders against resistance
- mm weakness could occur from stroke or peripheral n damage
Assessing gait
should be smooth and effortless
Romberg test
- pt. stands with feet together arms at side
- have them close eyes and balance
Positive romberg test can occur with
multiple sclerosis, intoxication, loss of proprioception, poor vestibular function
Assessing pain/sensation
tested using dull and sharp side randomly on extremities x4
- patient should distinguish sharp or dull
Assessing sensation
patient identifies random object placed in hands
Astereognosis
inability to identify object correctly - can occur in stroke
Deep tendon reflex testing
- short snappy blow of hammer onto tendon
- usually patellar/quadriceps
- right and left should have equal response
DTR ranking
0 = no response
1+ = diminished
2+ = average, expected
3+ = brisker than average
4+ = very brisk, hyperactive (disease)
Plantar reflex testing
- position thigh in slight external rotation
- draw slow stork up lateral side of sole of foot and inward across the ball of foot
Plantar reflex testing: expected
plantar flexion of toes and inversion of foot
Plantar reflex testing: abnormal
babinski signs - dorsiflexion and fanning of toes
- occurs with brain injury, stroke, brain tumor, MS, spinal cord injury
Joints
- union between 2 bones
Fibrous joints
- united by fibrous tissue or cartilage
- immoveable
- skull sutures
Cartilaginous joints
- separated by fibrocartilaginous discs
- slightly moveable
- vertebrae
Synovial joints
- freely moveable
- joint cavity lined with synovial membrane
Cartilage
- avascular, tough, firm, flexible
- absorbs shock and allows for movement
Ligaments
- connect bone to bone
- stabilize bones and limits movemente
Bursae
- fluid filled sacs that cushion bones and ligaments
- located in areas of potential friction
Tendons
connect mm to bone, strong fibrous cord
MM makes up how much body weight
40-50%
Swelling in musculoskeletal indicates
joint irritation, excess joint fluid, inflammation, bony enlargement
Subluxation
two bones in joint stay in contact but misaligned
Contracture
shortening of mm leading to limited ROM
Ankylosis
stiffness or fixation in joint
Warmth + tenderness of musculoskeletal means
inflammation
5+ mm grade
full ROM against gravity, full resistance, normal
4+ mm grade
full ROm against gravity, some resistance, good
3+ mm grade
full ROM with gravity, fair
2+ mm grade
full ROM with gravity eliminated, passive motion, poor
1+ mm grade
slight contraction, trace
0 mm grade
no contraction, zero
Crepitation
audible/palpable crunching or grating accompanying movement
ROM assessment
- start with active motion
- passive motion if limitations are assessed
- should be equal bilaterally
TMJ ROM
- place fingers in front of ears and have person open and close mouth then clench jaw
- should feel smooth movement
TMJ dysfunction
crepitus and pain during movement or chewing
- tenderness with palpation
Cervical spine ROM - flexion
touch chin to chest
Cervical spine ROM - extension
lift chin to ceiling
Cervical spine ROM - lateral bending
touch ears to shoulders