NervousSystemFOX
Terms
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- grey matter
- cell bodies, processing units
- dura mater
- outermost layer of connective tissue surrounding spinal cord
- arachnoid mater
- middle layer, cobweb like protein fibers
- subarachnoid space
- hold cerebrospinal fluid
- cerebrospinal fluid
- cushions spinal cord, nutrient transportation
- pia mater
- inner layer of membrane, attaches to outer surface of spinal cord
- spinal cord segments
- 31 segments
- neurons
- responsive cells in nervous system, carrying impulses
- cell body
- largest part, holds general parts.
- myelin
- electrically-insulating formation around axons
- myelinated fibers
- insulating envelope of myelin, surrounds core of nerve fibers. faster reaction time
- unmyelinated fibers
- nerve that lacks fatty sheath. slower reaction time
- ganglia
- any structure containing nerve cell bodies
- cranial nerves
- set of 12 nerves found on each side of the head and neck that control sesnory functions
- multipolar neurons
- a neuron with one axon, three or more dendrites
- spinal nerves
- cord-like structure comprising a collection of nerve fibers
- sensing stimuli function
- gathering information taking it into central nervous system
- intergrative function
- making judgements based upon experiences and stimuli
- motor function
- sending out impulses to muscles
- excitatory neurotransmitters
- promote action potential
- inhibitory neurotransmitters
- decreases membrane permability, prevents action potential