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 ganglion and nucleus

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Difference between ganglion and nucleus
Ganglion
Nucleus
Collection of nerve cell bodies outside the central nervous system
Collection of nerve cell bodies inside the central nervous system
It is the part of Peripheral Nervous System
It is the part of Central Nervous S
It is situated within the autonomic plexuses and at the nerve root  
Present within the white matter of brain and gray matter of spinal cord
Contain psuedounipolar neuron and or multipolar neuron and satellite cells  
Contain sensory neuron, multipolar neuron and astrocytes , microglia
Dorsal root ganglion,  Celiac ganglion, Aorticorenal ganglion
Caudate nucleus,  Dentate nucleus

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