Comparison between tract and nerve

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  Comparison between tract and nerve Nerve Nerve contain bundle of axons (nerve fibers) in the peripheral nervous system (PNS) that transmits signals between the central nervous system (CNS) and other parts of the body. It is the most important part of peripheral nervous system Location: Peripheral nervous system. Structure: Made of axons, connective tissue layers (endoneurium: axon is surrounded by it , perineurium: bundle of axons are surrounded by it, epineurium: whole nerve trunk is surrounded by it), and blood vessels. It gets myelination by Schwann cell   Function: Carries sensory signals to the CNS (afferent) from peripheral part of body or motor signals carry from from the CNS (efferent) to target organs like skeletal muscle, cardiac muscle, smooth muscle or glands Example: Sciatic nerve, median nerve, except optic nerve (though optic nerve is technically part of CNS in develop...
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Difference between sensory neuron and motor neuron

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Sensory neuron
Motor neuron
transmit sensory information (light, sounds, smell, touch, pressure, limb position) to the brain
Carry signals from brain to  the effectors like muscles and glands
Dendrites from the cell bodies are located outside of the CNS; the axons propagate to the spinal cord or brainstem to convey information to the brain.
Are situated in the anterior horn cell of gray matter of spinal cord
Example:
Pseudounipolar neuron present in dorsal root ganglion of spinal nerve root
Bipolar neuron : in olfactory cell , in retina
Multipolar neuron

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