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 supplies the viscera of the pelvic cavity. The inferior hypogastric plexus gives rise to the prostatic plexus in males and the uterovaginal plexus in females

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