Neurological System Flashcards
cns
- the BRAIN & SPINAL CORD
- 12 pairs
pns
- ALL NERVE FIBERS that are OUTSIDE the brain & spinal cord
- 31 pairs
midbrain
the RELAY CENTER for our EYE & EAR REFLEXES
- relays between CEREBRUM & BRAIN STEM
pons
links the CEREBELLUM to the CEREBRUM
links the MIDBRAIN to the MEDULLA
- reflex actions
medulla
controls our RESPIRATORY, HR, fORCE & BP
cerebellum
- important for COORDINATION & maintaining EQUILIBRIUM & MUSCLE TONE
- important for our PRIMARY FUNCTIONS
what is the DIFFERENCE BETWEEN AFFERENT & EFFERENT IMPULSES?
afferent:
- sends impulses UP to the brain
efferent:
- sends impulses DOWN to the glands & muscles
describe the ANS
- has impulses from BOTH CRANIAL & SPINA:
- important for maintaining HOMEOSTASIS
what are the TWO COMPONENTS of the ANS?
SYMPATHETIC;
fight or flight response
PARASYMPATHETIC;
the rest and digest response
what to do before STARTING a NEURO ASSESSMENT?
- want to EXPLAIN the procedure
- instruct family members NOT to answer questions for the patient
**want a CLEAR BASELINE for the patient
what is the PURPOSE OF THE ASSESSMENT (6)?
we want to cover;
- LOC & MENTATION
- MOVEMENT
- SENSATION
- CEREBELLAR FUNCTION
- REFLEXES
- CRANIAL NERVES
how do we EVALUATE LOC & MENTATION?
- looking at the patient’s ORIENTATION & MEMORY
what does the PATIENT have to be orientated to?
- PERSON
- PLACE
- TIME
- SITUATION
lethargic
the PATIENT is DROWSY but is able to be awakened
- can have slow or inattentive answers
full consciousness
- ALERT
- ATTENTIVE
- follows commands
obtunded
the patient is DIFFICULT to AROUSE & needs CONSTANT STIMULATION
stuporous
patient needs VIGOROUS & CONTINUOUS STIMULATION in order to stay awake–often needing a PAINFUL STIMULUS
- can often MOAN briefly etc…
comatose
no response to any stimulation even if painful
- no movement or sounds made
what are the THREE RESPONSES we look for in the GLASGOW COMA SCALE? what are the ranges of points?
- EYE OPENING RESPONSE
- VERBAL RESPONSE
- MOTOR RESPONSE
out of 15 points!
anything lower than 8 can an indicate a SEVERE BRAIN INJURY
definition of AVPU
a - patient is AWAKE
v - patient responds to VERBAL STIMULATION
p - patient responds to PAINFUL STIMULATION
u - patient is COMPLETELY UNRESPONSIVE
how do we DIVIDE MEMORY?
- IMMEDIATE MEMORY
- SHORT-TERM MEMORY
- REMOTE MEMORY
immediate memory
- quick repetition of recent events
ex. testing three objects
short-term memory
- memory of something that occurred recently in the past few days
ex. holidays or breakfast for the day