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78 Cards in this Set
- Front
- Back
Dendrites
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Receive and carry impulses to the cell body
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Cell Body
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Generates electrical impulses
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Axons
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Carry electrical impulses to the dendrites of another neuron using neurotransmitters
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Frontal lobe
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Regulates emotional expression, behavior and intellect, controls voluntary movement
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Broca's area
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expressive language function
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Temporal
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influences hearing, smell, taste and memory
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Wernicke's area
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language comprehension
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Limbic system
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emotional and sexual arousal, behavioral expression, recent memory, and smell
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Parietal
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perceives and interprets sensory input such as pain, temperature, touch, texture and proprioception
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Insula (central lobe)
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Involved in GI and viscera activity
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Occipital
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perceives and interprets visual stimuli, including spatial relationships
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Diencephalon
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connects cerebrum to brainstem
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thalamus
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clusters sensory stimuli and filters out unimportant stimuli
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hypothalamus
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controls and integrates autonomic nervous system and pituitary activity
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cerebellum
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located at the base of the brain, regulates involuntary aspects of movement, coordination, muscle tone, posture, equilibrium and kinesthetics
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brainstem
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involuntary survival, includes midbrain, medulla and pons, transmits impulses from the spinal cord and brain, attachment site of 10 of the 12 cranial nerves
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Dura mater (outer layer)
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Adds support and protection
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Arachnoid (middle layer)
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Provides space for cerebrospinal fluid
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Pia Mater (inner layer)
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Contains blood vessels
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Sensory pathways
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ascending. Medulla - L12
Afferent |
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Motor pathways
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Descending, Efferent
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Lateral Corticospinal
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Movement of extremities, fine finger movement
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Anterior corticospinal
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Voluntary movement of axial muscles
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Corticobulbar
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cranial nerves
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Rubrospinal
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Coordination and control of skilled muscle movement
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Reticulospinal
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integration of axial body movements, posture, body and limb movements
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vestibulospinal
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body posture, body and limb movements
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Spinal reflexes
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Not dependent on conscious perception bc they don't involve the brain. deep tendon and flexor
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Spinal and peripheral nerves
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31 pairs, ascending and descending fibers, innervates a particular area of the body
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Dermatomes
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cutaneous innervations of the spinal nerves
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Sympathetic (ANS)
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fight or flight
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Parasympathetic (ANS)
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rest and digest
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Protective reflexes of newborn
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Rooting, sucking, palmar grasp, stepping, moro/startle reflex
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Folic acid deficiency in pregnant women
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neural tube defects (spina bifida)
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African americans
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increased HTN and stroke
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Irish
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Neural tube defects
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Navajo
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unique neuropathy causes severe neurological symptoms
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Symptoms signal a problem with neurologic system
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headache, mental status, dizziness, vertigo, syncope, numbness, deficits of the 5 senses
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Neurologic exam tests:
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mental, cranial nerve function, sensory, reflex, cerebellar
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LOC
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arousal and orientation
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Glasgow coma scale
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Predicts how well you'll recover from head injury
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Memory
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Immediate, recent and remote
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Mathematic ability
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Count backwards 20-0
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Thought processes
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Attention span, abstract reasoning, judgment, communication
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Mini mental state exam
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Orientation, registration, attention and calculation, recall, language
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Single cutoff
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<24 abnormal
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Range
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<21 Increased odds of dementia
>25 decreased odds of dementia |
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Education
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21 Abnormal for 8th grade education
<23 Abnormal for high school education <24 abnormal for college education |
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Severity
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24-30 No cognitive impairment
18-23 Mild cognitive impairment 0-17 severe cognitive impairment |
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Mnemonic for Mental Status Exam: FROMAJE
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Function (physical)
Reasoning Orientation Memory Arithmetic Judgement Emotions |
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LOC: Alert
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keen and attentive
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LOC: lethargic
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Dull and drowsy
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LOC: Obtunded
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difficult to arouse
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LOC: Stuporous
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requires vigorous stimulation for a response. May require painful stimulus
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LOC: Comatose
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Does not respond appropriately to either verbal or painful stimuli
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Sensory function checks for:
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Superficial, Deep, discriminatory sensations
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Superficial sensation
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Pain, light touch, temperature
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Deep sensation
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vibratory, kinesthetics
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Discriminatory sensation
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Stereognosis, graphesthesia, 2 point discrimination, point localization, sensory extinction
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Deep tendon reflexes grading
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0 no response
1 response present but diminished 2 normal 3 somewhat stronger than normal 4 hyperactive with clonus |
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Superficial reflexes
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Plantar, abdominal, anal,
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Protective reflexes
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gag, cough, swallow, blink, corneal
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Primitive reflexes
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babinski, sucking, grasp, rooting, snout, glabellar
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Cerebellar function
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Roadside sobriety test, balance, coordination, accuracy of movement
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Reticular Activating System (RAS)
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Network of hyperexcitable neurons in the brain stem and cerebral cortex
Screens and channels incoming sensory input Helps maintain consciousness |
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Hyperactive reflexes:
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in later pregnancy may signal preeclampsia.
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Older adults:
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Creative, critical, and abstract thinking and problem solving abilities are often increased.
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Avoid making:
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Language barrier or cultural variations in communication for neurological impairment.
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What can history tell you about the neurologic/sensory system?
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Biographical data
Current health status Past health history Family history ROS Psychosocial history |
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Babinski
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Stroke lateral sole of foot - dorsiflexion of great toe and fanning of toes.
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Sucking
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Stimulate lips with swab, client starts sucking.
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Grasp
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Place fingers in hand - client automatically grasps yours.
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Rooting
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Gently stroke side of face and client turns face toward stroked side.
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Snout
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Gently tap oral area and lips pucker
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Glabellar
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Gently tap client's forehead and client blinks
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Balance
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Tandem walking or Romberg's test
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Coordination
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Rapid alternating movements, finger thumb opposition, heel to shin
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Accuracy of movement
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Point to point localization (finger to nose)
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