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