chapter 11 nervous_001.ppt

8/13/2019 chapter 11 nervous_001.ppt

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NERVOUS SYSTEM

By: BEVERLY JILL E. MANIBOG, RN,MSN


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NERVOUS SYSTEM

Controls and coordinates thebodys movements and functions.

Recieves sensory input. Consists of nerves, brain, spinal

cord, and sense organs.

NERVE- made up of special cells(neurons)


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Nerves are classified by their functionsSENSORY NERVES

Carry impulses fromthe body to the brainor spinal cord.

Impulses are knownas sensations andinclude touch,

pressure, pain,temperature, andproprioception orposition sense.

MOTOR NERVES

Carry impulses awayfrom the brain orspinal cord, to

muscles and glands,and producemovement.


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Major Structures of the Brain includes:

CEREBRUM

Functions are memory, thinking, sensoryperception and interpretation, voluntarymuscular movement, and emotional aspectsof behavior.

CEREBELLUM

Coordinates voluntary movement, posture,and equilibrium


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Cont.

DIENCEPHALON (interbrain)- is made up of thethalamus and hypothalamus

BRAIN STEM- consists of the medulla,pons, andmidbrain.


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SYMPTOMS AND DISEASE CONDITION Aphasia - impaired speech Apraxia - inability to perform voluntary

purposeful movement

Astigmatism - warped or distorted image Blepharitis - inflammation of eyelid Cataract - loss of vision due to clouding of

the eye lens Epilepsy - excessive electrical activity in

brain.


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Glaucoma - increased intraocular pressure Hematoma - localized collection of blood Migraine - severe headache

Multiple sclerosis - formation of plaque inthe brain or spinal cord causing somedegree of tremor, paralysis, or speechdisturbance.

Nuchal rigidity - stiff neck Nystagmus - jerking eye movement


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Paralysis - loss of voluntary movement Sciatica - pain in lower back and hip

radiating down posterior thigh.

Syncope - fainting Tremor - involuntary trembling or shaking Vertigo - feeling as if room is spinning;

dizziness


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MEDICAL PROCEDURES Audiometry - hearing test Spinal/ lumbar puncture - removal of spinal

fluid for lab testing. Tonometry - measurement of intraocular

pressure Tunning fork - tests gross hearing; identifies

conduction versus sensorineural hearing loss Tympanogram - test of the vibrating function

of the tympanic membrane Visual refraction - routine eye (acuity) exam.


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SURGICAL PROCEDURES Keratoplasty - replacement of opaque

cornea with transparent one. Laminectomy - removal of vertebral

lamina to access a ruptured disk. Photocoagulation - use of laser to

cauterize tissue or blood vessel.


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SELECTING THE RIGHT WORD Caudal - pertaining to the tail; inferior position coddle - pamper Cuddle - snuggle Chord - combination of musical notes Cord - long ropelike structure; to become

stringlike faze - overwhelm; intimidate Phase - stage; interval Phrase - group of related words; short

expression


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SELECTING THE RIGHT WORD Installation - arrange for service or use Instillation - applying liquid drop by drop Knuckle - finger joint when making a fist. Nuchal - back of the neck Reflection - likeness or image that is returned,

like a mirror. Refraction - bending of light when it passes

from one medium into another.


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