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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 cervical and lumbar enlargement of spinal cord

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Difference between cervical and lumbar enlargement of spinal cord Topic Cervical enlargement Lumbar enlargement Extent From C5 to T1 spinal segments From L2 to S3 spinal segments Vertebral level From C3 to T1 vertebra From T9 to L1 vertebrae Wider circumference About 38mm at the level of C6 segment About 35mm at the level of S1 segments Innervation Muscles of upper limbs and their associated girdles Muscles of the lower limb and their associated girdles
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Difference between vasculogenesis and angiogenesis

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Video link https://youtu.be/xLvbOVmVbG4
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Difference between superficial and deep cardiac plexus

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Difference between superficial and deep cardiac plexus Superficial cardiac plexus Deep cardiac plexus It is situated below the arch of aorta It is situated behind the arch of aorta It is situated in front of the bifurcation of pulmonary trunk , It is situated in front of the bifurcation of trachea, It is slight anteromedial to the legamentum arteriosum It is right of legamentum arteriosum   It is smaller than the deep cardiac plexus It is bigger than the superficial cardiac plexus It is situated more anteriorly It is situated more posteriorly It is formed by cardiac branch of superior cervical ganglion of left cervical sympathetic chain and inferior cervical cardiac branch of left vagus It is formed by all the cardiac branches of superior , middel and inferior cervical ganglion , upper 4-5 thoracic ganglion of the sympathetic chain , all the cardiac branches of vagus and recur...
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Difference between pronephros , mesonephros and metanephros

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Difference between pronephros , mesonephros and metanephros http://www.branoo.com/productdetail/1076/Jaguar-Vision-III-for-Men-Eau-de-Toilette-100ml/26105 Topics Pronephros Mesonephros Metanephros Location Cervical region Thoracolumbar region Sacral region Segmentation Segmented Segmented Non segmented Time of appearance Beginning of 4 th week End of the 4 th week Beginning of 4 th months Functional status Nonfunctional Functional for a short period   then disappears except for its caudal excretory tubules Functional Duct Pronephric duct Mesonephric duct Ureter Fate Disappear Disappear but in male part of it forms duct of reproductive system Adult kidney is formed
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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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