QUIZ 6 Flashcards
NEURON(NERVE CELLS)
SEND AND RECEIVE MESSAGES ALONG NERVE PATHWAYS TO/FROM THE BRAIN TO THE REST OF THE BODY
CENTRAL NERVOUS SYSTEM is…
center,core
consists of
Brain
Spinal cord
Brain
large organ responsible for intelligence
spinal cord
cibtriks body reflexes-sends messages back and forth between body and brain
Peripheral nervous system
part of the nervous system made up of nerves that extend throughout the body and connect to the spinal cord.
Nerves(neuron fibers) receive and transmit nerve impulses (heat, pain, pressure etc)
Brain divided into two hemispheres
Damage on left side of brain effects the right side of the body
Iris
color part of eye
sclera
white part of eye
Pupil
circular opening in center of eye-reacts to light
Cornea
clear protective membrane covering the eyeball
eye disorders
cataracts -blurred vision(clouds develope over lense
-glaucoma- increased pressure in eye
-macular degeneration-slow deterioration in middle vision
Aging nervous system
-reflexes slower
-memory loss(short term especially
-sensitivity of nerve endings in skin diminish
-some hearing loss
-sense of vision, smell and taste weaken
CVA Cerebrovascular Accident
Stroke or “brain attack”
Tympanic membrane
eardrum
ossicles
3 tiny bones in the middle ear that pick up and transfer the vibrations to the inner ear
dysphagia
difficulty swallowing
dysphasia
difficulty speaking
expressive aphasia
inability to speak words
receptive aphasia
inability to understand words spoken to them
parkinsons disease
progressive brain deterioration-no longer able to produce dopamine(causes uncontrollable tremors)
MS multiple Sclerosis
Auto immune disease where body attacks and destroys the protective covering of nerve fibers(myelin)
Dementia
loss of mental abilities (thinking, reasoning, communication)
-it is chronic and irreversible…
Alzheimers is the most common form of dementia
delirium
acute (short term) usually caused by fever, head injury low oxygen, or drug/alcohol use, dehyration
Alzheimers
progressive degenerative disease that is caused by plaques and tangles that wrap around brain nerve cells
-early stage-memory loss and forgetfulness
-middle stage-personality and behavior changes (wandering and confusion)
Late stage- complete loss of ability to communicate, move and respond
Preservation
repeated words, phrases or questions
