Unit 12 - Nervous System Key Terms 2 Flashcards Preview

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Flashcards in Unit 12 - Nervous System Key Terms 2 Deck (40)
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1

stroke

any disorder of the cerebral blood vessels that causes a loss of consciousness due to oxygen deprivation of brain tissue

2

CVA

cerebrovascular attack

3

ischemic storke

blockage of carotid arteries by plaque or thrombus, resulting in insufficient blood flow to the brain

4

Intracerebral hemorrhage

•Rupture of vessels in the brain •Compression and destruction of brain structures from released
blood

5

Subarachnoid hemorrhage

•Release of blood into the space surrounding the brain
•Commonly caused by a ruptured aneurysm
•Usually fatal

6

signs and symptoms of stroke

hemiparesis, ataxia, aphasia, loss of consciousness, blurred vision, TIA

7

TIA

transient ischemic attack, (signs and symptoms of a mild stroke that resolve within 24 hours)

8

dysphagia

difficulty swallowing

9

dysphasia

difficulty speaking

10

AD

Alzheimer Disease

11

Alzheimer Disease

•Most common form of dementia
•Interference with memory, learning, and,
eventually, the ability to function
•Associated with neuritic “plaques” that form in
a small area of the brain and, eventually, spread
•Definitive diagnosis only possible on autopsy

12

AD signs and symptoms

•Forgetfulness
•Diminished interest in daily activity, acquaintances,
and surroundings
•Getting lost on familiar routes
•Personality changes
•Loss of social skills

13

AD treatment

•Primarily supportive
•Altering the environment to ensure the patient’s safety
•Support of family members and caregivers
•Medical management, considering potential adverse effects

14

deterioration

the process of becoming progressively worse.

15

dyslexia

a general term for disorders that involve difficulty in learning to read or interpret words, letters, and other symbols, but that do not affect general intelligence.

16

dementia

describes various symptoms of cognitive decline, such as forgetfulness

17

aura

awareness or feeling of an approaching physical or mental disorder, commonly preceding a seizure

18

convulsion

any sudden, violent contraction of one or more muscles

19

lethargy

abnormal inactivity of lack of response to normal stimuli

20

palsy

paralysis, usually partial, and
commonly characterized by weakness, shaking, or uncontrolled tremors

21

paresthesia

sensation of numbness,
prickling, tingling, or heightened sensitivity

22

syncope

temporary loss of consciousness; also called fainting

23

cryosurgery

•Exposure of abnormal tissue to extreme cold (super freezing)

24

Thalamotomy

•Destruction of a very small area of the thalamus
•Used to control tremors in Parkinson disease

25

Stereotaxic radiosurgery

•Production of three-dimentional coordinates to
determine the precise location of small areas for
treatment
•Used to determine location for various procedures,
including excision, biopsy, stimulation, or
manipulation

26

tractotomy`

•Incision of a nerve tract, usually in the brain stem or
spinal cord
•Used to relieve intractable pain

27

trephination

•Production of a circular opening into the skull using a special device called a trephine •Used to reveal brain tissue or relieve intracranial pressure

28

EEG

Electroencephalography

29

Electroencephalography

Placement of electrodes on the skull using
adhesive strips
• Recording of electrical activity of the brain on
tracings (strips of paper)
• Analysis of tracings to help locate seizure focus or areas of inactivity

30

EMG

Electromyography