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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 lumbar and sacral splanchnic nerve

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Difference between lumbar and sacral splanchnic nerve Name Location of preganglionic neuron Sympathetic ganglion Collateral Ganglion Form Autonomic   Plexus Fibres Functions Lumbar splanchnic nerve Lateral horn of gray matter of Lumbar 1,2 spinal cord segment Lumbar 1,2 Inferior mesenteric ganglion Superior hypogastric plexus Preganglionic Sympathetic Fibres and General visceral afferent fiber Innervate pelvic viscera and vasculature Sacral splanchnic nerve Lateral horn of gray matter of Lumbar 1,2 spinal cord segment Sacral 1-5 Inferior mesenteric ganglion Inferior hypogastric plexus Preganglionic and postganglionic fibres Sympathetic Fibres and General visceral afferent fiber The inferior hypogastric plexus is a plexus of nerves that suppli...
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Difference between greater, lesser and least splanchnic nerve

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Difference between greater, lesser and least splanchnic nerve  Name Location of preganglionic neuron Sympathetic ganglion Collateral Ganglion Form autonomic Plexus Functions Greater splanchnic nerve Lateral horn of gray matter of Thoracic 5-9 spinal cord segment Thoracic 5-9 Synapse with celiac ganglion Celiac plexus   The fibers in this nerve modulate the activity   of the enteric nervous system of the foregut. They also provide the sympathetic innervation to the adrenal medulla, stimulating catecholamine release. Lesser splanchnic nerve Lateral horn of gray matter of Thoracic 10-11 spinal cord segment Thoracic   10-11 Synapse with   aortico-renal ganglion or superior mesenteric ganglion Renal plexus The nerve modulates the activity of the enteric nervous system of the midgut least or lowest splanchnic nerve Late...
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Difference between lesser and least splanchnic nerve

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Difference between lesser and least splanchnic nerve Name Location of preganglionic neuron Sympathetic ganglion Collateral Ganglion Form autonomic Plexus Functions Lesser splanchnic nerve Lateral horn of gray matter of Thoracic 10-11 spinal cord segment Thoracic  10-11 Synapse with  aortico-renal ganglion or superior mesenteric ganglion Renal plexus The nerve modulates the activity of the enteric nervous system of the midgut least or lowest splanchnic nerve Lateral horn of gray matter of Thoracic 12 spinal cord segment Thoracic 12 Synapse with  aortico-renal ganglion Renal plexus   Renal plexus enters the kidneys on arterial branches to supply the vessels, Renal glomerulus, and tubules  
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