Nervous System Flashcards
The Nervous System consists of :
- brain
- spinal cords
- nerves
Functions of the Nervous System :
- collecting
- processing
- directing
Neur/o
neuron
cererbr/o
cerebrum
largest part of the brain
cerebrum
crani/o
cranium
encephal/o
brain
Encephalopathy :
disease of the brain
3 layers :
- dura mater
- arachnoid mater
- pia mater
“tough mother” toughest layer
dura mater
“spider” thin layer
arachnoid mater
“very fragile and delicate layer
pia mater
mening/o
Meninges
what is another name for afferent nerves ?
sensory nerves
what is another name for efferent nerves ?
motor nerves
3 layers of the brain and spinal cord.
- The bony vertebrae surrounding the spinal cord protect it, along with the coating of the CNS.
Meninges
CNS :
central nervous system
what are the 2 main parts of the CNS ?
- brain
- spinal cord
PNS :
peripheral nervous system
little part of your brain
Cerebellum
nerve cell.
- composed of a cell body, dendrites, and an axon.
Neuron
S.A.M.E
- sensory
- afferent
- motor
- efferent
neurons that connect to brain regions.
(not direct motor neurons or sensory neurons)
Interneurons
A protective insulation that covers the axons and helps with the transmission of nerve impulses.
Myelin sheath
May cause visual, sensory, motor, or verbal disturbances.
- Examples : hearing noises, difficulty speaking, vision loss, and jerking.
Aura
The spinal cord injury affects some or all of the trunk, legs, and pelvic organs.
Paraplegia
The spinal cord injury affects the arms, hands, trunk, legs, and pelvic organs
Quadriplegia
one-sided paralysis
Hemiplegia
A chemical that helps a nerve cell communicate with another nerve cell or muscle.
Neurotransmitter
Grooves or depressions on the surface of the brain between the gyri.
Sulcus
Folds or convolutions on the surface of the cerebral hemisphere, which increase the gray matter surface area.
Gyrus
memory loss
Amnesia
The most serious type because the spinal canal is open along several vertebrae.
Myelomeningocele
An abnormal accumulation of cerebrospinal fluid that causes enlargement of the skull and compression of the brain.
Hydrocephalus
A state of deep, often prolonged unconsciousness, usually the result of a head injury, neurologic disease, intoxication, or metabolic abnormalities.
coma
A type of brain injury resulting from a hit to the head or body that causes the brain to move rapidly back and forth.
Concussion
scattered areas of bleeding on the surface of the brain, most commonly along the undersurface and poles of the frontal and temporal lobes
Cerebral contusion
Used to see how the blood flows through the brain.
Cerebral angiography
EEG
Electroencephalography
- Used to record the brain wave activity of a patient.
A nerve response test that uses electrodes, which are placed on the scalp to measure brain reaction to a stimulus.
- used to measure a pt action potential
Evoked potential test
LP
lumbar puncture
(spinal tap)
The act of sticking to something.
Adherence
self-propagating wave of electrical impulse that travels along the surface of a neuron membrane.
action potential
chronic seizures
epilepsy
