Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
38 Cards in this Set
- Front
- Back
neuron
|
basic cell of the nervous system
carry nerve messages, or impulses, from one part of body to another |
|
dendrites
|
short, branching fibers that carry nerve impulses toward the cell body
|
|
axon
|
long thin fiber, carries impulses away from cell body
|
|
myelin
|
fatty material, insulates the axon and increases the speed at which an impulse travels
|
|
synapse
|
space between an axon and the structurewith which the neuron communicates
|
|
sensory neurons
|
pick up infoabout external and internal environment from sense organs and body
|
|
motor neurons
|
send impulses to muscles and glands causing them to react
|
|
interneurons
|
only in brain and spinal cord, pass impulses from one neuron to the other
|
|
central nervous system
|
brain and spinal cord
|
|
peripheral n.s
|
all nerves that connect the brain andspinal cord to other parts of body
|
|
brain
|
moist, spongy organ controls everything...actions, thoughts, and memory
|
|
menings
|
beneath skul, three layersof memvranes that cover the brain and give it further protection
|
|
cerebrospinal fluid
|
a liquid btween middle and inner menings and other parts of brain, give cushioning and protection
|
|
cerebrum
|
large upper region
|
|
cerebellum
|
just beneath the back part of cerebrum,coordinates contractions of muscles
|
|
brainstem
|
below cerebellum at base of skull, life support system, heartbeat, breathing, and blood pressure
|
|
thalamus
|
relay station for senses,
|
|
hypothalamus
|
regulates body temp, sleep, water balance, blood pressure
|
|
spinal cord
|
nerve tissue that extends from the brain down the back just below the ribs
|
|
cranial nerves
|
12 pairs of nerves that emerge from brain, connect with head
|
|
spinal nerves
|
31 pairs branch from spinal cord
|
|
somatic nervous system
|
responsible for actions that can be controlled
|
|
automatic n.s
|
regulates automatic actions, not controlled
|
|
reflex
|
automatic response of n.s to environment
|
|
concussion
|
short loss of consciousness after bump to head- shoft brain tissue in contact with skull
|
|
coma
|
prolonged period ofdeep unconsciousness, diseases and o.d
|
|
paralysis
|
loss of ability to move some part of the body, nerves are so damaged they can no longer signal muscle movement
|
|
quadriplegia
|
neck down paralysis
|
|
pparpelegia
|
lower body paralysis, lowr spinal cord injury
|
|
meningitis
|
inflammation of meninges of brain and spinal cord, children
|
|
rabies
|
infection of central nervous system from bite of infected animal
|
|
migraine headaches
|
severve headaches last a long time
|
|
cerebral palsy
|
nervous system damagebefore, during or after birth, lack of full control of body movement
|
|
epilepsy
|
disturbed brain messenges
|
|
seizure
|
sudden storm of brain activity due to epilepsy
|
|
multiple sclerosis
|
patches of myelin are destroyed, difficulty mucsle control, vision and speech trouble
|
|
multiple sclerosis
|
patches of myelin are destroyed, difficulty mucsle control, vision and speech trouble
|
|
multiple sclerosis
|
patches of myelin are destroyed, difficulty mucsle control, vision and speech trouble
|