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what 2 types of cell do periphery nerves contain axons from
sensory neurons (afferent)
motor neurons (efferent)
are sensory neurones afferent or efferent
afferent (towards CNS)
are motor neurons afferent or efferent
efferent (away from CNS)
how many segments make up the spinal collumn in total
31
there are 31 segments in the spinal cord, how many spinal nerves does each segment give rise to
2
the axons in a peripheral nerve can be myelinated and unmyelinated, what are the characteristics of a myelinated fibre and what does it typically detect?
Large axon diameterFast conduction velocities
Detects:
Touch
vibration
motor
the axons in a peripheral nerve can be myelinated and unmyelinated, what are the characteristics of an unmyelinated fibre and what does it typically detect?
Small axon diameterSlow conduction velocities
Pain
cold
hot
do sensory afferents go through the ventral or dorsal aspect of the spinal cord
dorsal
do motor efferents go through the ventral or dorsal aspect of the spinal cord
ventral
what type of axon innervates skeletal muscle
motorneuron axon
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