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Theory Test IV

Unit XIII Neurosensory

Reception Process of receiving stimuli or data
Kinesthetic Awareness of the position and movement of body parts.
Stereognosis Ability to perceive and understand an object through touch.
Sensory Perception Conscious organization and translation of the data or stimuli into meaningful information.
Sensory Reception Process of receiving stimuli or data.
Visceral sensory Refers to any large organ within the body (eg. a full stomach)
Four aspects needed to be aware of the surroundings Stimulus, Receptor, Impulse conduction, Perception
Stimulus Agent or act that stimulates a nerve receptor
Receptor Nerve cell converts the stimulus into nerve impulse. (Most are specific to only on type of stimulus)
Impulse conduction Impulse travels along nerve pathways either to spinal cord or directly to the brain.
Perception Awareness and interpretation of stimuli, takes place in the brain.
What does RAS stand for? Reticular activating system
Where and what is the RAS? Located in the brainstem and is thought to mediate the arousal mechanism. (alertness or sleepiness)
Awareness The ability to perceive internal and external stimuli, and to respond appropriately through thought and action.
Full consciousness Alert; oriented X 3; understands verbal written words
Disoriented Not oriented to time, place, or person
Confused Reduced awareness, easily bewildered; impaired judgement; poor memory, misinterprets stimuli
Somnolent Extreme drowsiness but will respond to stimuli
Semicomatose Can be aroused by extreme or repeated stimuli
Coma Will not respond to verbal stimuli
Sensory deprivation Decrease in or lack of meaningful stimuli. (Balance in RAS is disturbed and is unable to maintain normal stimuli)
Sensory overload Occurs when a person in unable to process or manage the amount or intensity of sensory stimuli.
Normal awareness Able to handle multiple stimuli at once
Delirium Acute confusion. Abrupt onset and can be treated to reverse confusion.
Dementia Chronic confusion. Has symptoms that are gradual and irreversible.
Orientation X 4 (what are the 4?) Time, place, person, and situation
Scale to measure LOC (Level of Consciousness) Glaslow Coma Scale
Cranial Nerve I Olfactory: Sense of smell
Cranial Nerve II Optic: Vision / visual fields
Cranial Nerve III Ocular Motor: Responsible for 4 of the 6 eye movements, eye lids, pupil reaction and accommodation
Cranial Nerve IV Trochlear: Outward and downward eye movements
Cranial Nerve V Trigemenal: Facial sensation, jaw movement, corneal reflex
Cranial Nerve VI Abducens: Responsible for lateral eye movement
Cranial Nerve VII Facial: Facial symmetry, raise eyebrows, close eyes tight, smile, puff cheeks, taste and the ability to identify sweet, salty, sour, and bitter.
Cranial Nerve VIII Auditory: Hearing and balance
Cranial Nerve IX Glossopharangeal: tongue movement, taste posterior to tongue.
Cranial Nerve X Vagus: Sensation of larynx and pharynx, swallowing, vocal cord movement
Cranial Nerve XI Spinal Accessory: Shrugging shoulders, turning head
Cranial Nerve XII Hypoglossal: Protrusion of the tongue, movement of tongue side to side while protruded.
Aphasia Any defects in loss of the power to express oneself by speech, writing, or signs, or to comprehend spoken or written language due to disease or injury of the cerebral cortex.
Two types of aphasia Sensory/receptive aphasia and motor/expressive aphasia
Sensory/Receptive aphasia Loss of the ability to comprehend written or spoken words. Auditory or visual.
Motor/Expressive aphasia Loss of the power to express oneself by writing, making signs, or speaking. Can understand words, but cannot combine speech sounds into words.
Cranial nerves that are tested together III & IV & VI and IX & X
Created by: Jnford15