Nerve Conduction Save
ALREADY PASSED
PNS can be classified on what attributes? - =Myelination
Somatic
Autonomic
PNS consists of: - =Nerves and ganglia that extend from the brain and the spinal cord
bundles of peripheral nerve fibers; provide strength and diffusion barrier - =Fascicles
outer protection of individual fascicles - =Perineum
a. surrounding layer of fascicles, veins and arteries- protect nerve from compression - =Epineurium
Large diameter and heavily myelinated nerve fibers conduct impulses much - =faster
Small diameter , unmyelinated nerve fibers conduct impulses much - =slower
heavily myelinated (fastest fibers), micron units - =Type A Nerve Fiber
myelinated but not as much as Type A - =Type B nerve fiber
unmyelinated, smallest diameters of the peripheral nerves (slowest fibers) - =Type C nerve fiber
Axons -Communication link between what? - =CNS and Periphery and part or Nerve impulse
propagation
conduct electrical impulses and are composed of the same basic elements - =Axons
, A jelly like substance that helps with controlling conduction - =Axoplasm
Axons Conduct in orthodromic or antidromic direction? - =orthodromic
afferent (to spinal cord) - =Sensory
efferent (to neuromuscular junction) - =Motor
Composed of: sensory receptors, axons, sensory cell bodies, and the respective synapses - =Sensory
(afferent)
Obtain information from the periphery and transmit it to the spinal cord and brain (to CNS) - =Sensory
(afferent)
Composed of: a cell body, axon, neuromuscular junction, and the muscle finer in which it innervates -
=Motor (efferent)
Primary function: to control skeletal muscles - =Motor (efferent)
The space at the terminals where chemical excitation occurs and allow transmission between neurons -
=Synapse
Cells communicate by - =releasing neurotransmitters
presynaptic side contains - =synaptic vesicles
postsynaptic side contains - =neurotransmitter modules
ALREADY PASSED
PNS can be classified on what attributes? - =Myelination
Somatic
Autonomic
PNS consists of: - =Nerves and ganglia that extend from the brain and the spinal cord
bundles of peripheral nerve fibers; provide strength and diffusion barrier - =Fascicles
outer protection of individual fascicles - =Perineum
a. surrounding layer of fascicles, veins and arteries- protect nerve from compression - =Epineurium
Large diameter and heavily myelinated nerve fibers conduct impulses much - =faster
Small diameter , unmyelinated nerve fibers conduct impulses much - =slower
heavily myelinated (fastest fibers), micron units - =Type A Nerve Fiber
myelinated but not as much as Type A - =Type B nerve fiber
unmyelinated, smallest diameters of the peripheral nerves (slowest fibers) - =Type C nerve fiber
Axons -Communication link between what? - =CNS and Periphery and part or Nerve impulse
propagation
conduct electrical impulses and are composed of the same basic elements - =Axons
, A jelly like substance that helps with controlling conduction - =Axoplasm
Axons Conduct in orthodromic or antidromic direction? - =orthodromic
afferent (to spinal cord) - =Sensory
efferent (to neuromuscular junction) - =Motor
Composed of: sensory receptors, axons, sensory cell bodies, and the respective synapses - =Sensory
(afferent)
Obtain information from the periphery and transmit it to the spinal cord and brain (to CNS) - =Sensory
(afferent)
Composed of: a cell body, axon, neuromuscular junction, and the muscle finer in which it innervates -
=Motor (efferent)
Primary function: to control skeletal muscles - =Motor (efferent)
The space at the terminals where chemical excitation occurs and allow transmission between neurons -
=Synapse
Cells communicate by - =releasing neurotransmitters
presynaptic side contains - =synaptic vesicles
postsynaptic side contains - =neurotransmitter modules
