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 the muscular attachment of sternum on the anterior and posterior surface

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Difference between the muscular attachment of sternum on the anterior and posterior surface


Parts
Muscular attached on the anterior surface of the sternum
Muscular attached on the posterior surface of the sternum
Upper part of sternum
Sterna head of sternocleidomastoid
Sternohyoid & sternothyroid
Middle part
Pectoralis major
Sternocostalis
Lower part
Rectus abdominis
Diaphragm (sternal fibres)

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