nervous system Flashcards by

plexus

network of interconnecting spinal nerves

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endorphin

hormone that relives pain

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acetylcholine

hormone that influences muscle action

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norepinephrine

affects alertness

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pia mater

third layer of meninges located nearest the brain and spinal cord

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cerebrum

largest portion of the brain

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thalamus

below the cerebrum

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autonomic nervous system

involuntary action

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cephelagia

headache

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migraine headache

headache on one side of the head

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encephalocele

herniation of brain through skull

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meningocele

herniation of meninges through a skull or spinal cord

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encephalitis

brain inflammation

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Reyes syndrome

serious disorder in children characterized by confusion and vomiting

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tetanus

lockjaw

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huntingtons disease

genetic disorder: degeneration of nerve cells

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amnesia

memory disturbances

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concussion

violent shaking up of brain

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cerebral contusion

bruising of brain tissue

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contrecoup

Injury beneath skull opposite to impact

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lethary

low level of consciousness, high levels of drowsiness, and apathy

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apathy

low level of activity

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stupor

unresponsive state

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syncope

fainting

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delirium

acute condition of confusion, disorientation

ischemic stroke

narrowing/blockage of carotid artery

embolic stroke

blood clot delivers through bloodstream

hemorrhagic stroke

leak of blood vessels of the brain

arteriovenous malformation

hemorrhagic strokes due to abnormal vein and artery connections

narcolepsy

brief episodes of falling asleep during the day

somnambulism

performing an activity without awakening

noctambulism

sleep walking

myelosis

spinal cord tumour

poliomyelitis

viral infection of brainstem and spinal cord

cervical radiculopathy

nerve pain caused by pressure on spinal nerve roots in neck

progressive autoimmune disorder

demyelination

loss of patches of myelin sheath

Lou Gehrig's disease

neuro disease that attacks somatic cells

bells palsy

paralysis on one side of the face

Gillian barre syndrome

inflammation of myelin sheath of peripheral nerves

sciatia

inflammation of sciatic nerves

tonic-clonic seizure

entire body seizure

Encephalo

brain

myel/o

spinal cord

anticonvulsant

prevents seizures

barbiturates

calming or depressing affects on CNS

gamma knife surgery

gamma radiation treatment for brain tumours without a knife

mental retardation

diagnosis of significant below-average intellectual and adaptive functioning

fascitious disorders

patients makes up sickness and acts as if they are sick when they aren't

trich

hair

pyro

fire

dysthymia

low-grade chronic depression

catatonic behaviour

lack of responsiveness and tendency to remain in a fixed posture

somatoform disorders

exaggerated physical complaints about ones body

anxiolytic

anti-anxiety medication

hypnotherapy

hypnosis

conjuctivita

mucuous membrane lining the underside of each eyelid

lacrimal apparatus

structures that produce tears

rods

black and white receptors

cones

colour receptors

xerophthalmia

drying of surfaces caused by aging

chalazion

cyst on upper eyelid

ectropion

eversion of edge of eyelid, affecting lower eyelid

hordeolum

pus-filled, painful stye on eyelid

miosis

contraction of pupil

mydrasis

dilation of pupil

nystagmus

constant, rhythmic movement of the eyeball

monochromatism

colour blindness

presbyopia

common changes in eye caused by aging

strabismus

eyes point in different directions because they are improperly aligned

amblyopia

dimness of vision

enucleation

eyeball removal

concave for

myopia (nearsighted)

convex for

hyperopia (far sighted)

cerumen

earwax

pinna

external part of the ear

otomycosis

swimmers ear: fungal infection

menires disease

rare chronic disorder where fluid in inner ear increases

presbycusis

deafness as body ages

weber and rinne tests

tuning fork to distinguish between hearing loss