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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 upper limb and lower limb

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Difference between upper limb and lower limb <script data-ad-client="ca-pub-3738618711723990" async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script> Topics Upper limb Lower limb Size Smaller and shorter Larger and longer Bones Smaller and weaker Larger and stronger Movement More movable Less movable Attachment with girdle Less firmly attached More firmly attached Carrying angle Present Absent Angle of inclination Absent Present Position of flexor muscle Anteriorly Posteriorly Position of extension muscle Posteriorly Anteriorly Joints Smaller and less stable Larger and more stable Muscles Larger and attached to larger bony areas ...
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Difference between right and left coronary artery

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Difference between right and left coronary artery <script data-ad-client="ca-pub-3738618711723990" async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script> Topic Right coronary artery Left coronary artery Aortic sinus It arises from anterior aortic sinus of ascending aorta It arises from left posterior   aortic sinus of ascending aorta Size Smaller than the left coronary artery Bigger than the right coronary artery Course 1.        It passes forwards and to right between the pulmonary trunk and right auricle 2.        Then it passes along the anterior right part of atrioventricular groove 3.        Then it crosses the inferior border 4.        Then it passes downwards and to the left along the poster...
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