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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 open and close splenic circulation

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Difference between open and close splenic circulation   Open circulation:   Closed circulation:   Splenic artery →the trabecular artery →central artery →penicillar arteries→terminal   arterial capillaries (TAC) → red pulp →splenic sinusoids →splenic vein   Splenic artery →the trabecular artery →central artery →penicillar arteries→ terminal   arterial capillaries (TAC) →splenic sinusoids →splenic vein    
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Difference between T Lymphocyte and B lymphocyte : lecture note

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 Difference between T Lymphocyte and B lymphocyte  Lymphocyte Origin Maturation and differentiation occur in Final destination T lymphocyte Bone marrow Thymus Mid & deep zone of lymph node, in periarterial lymphatic sheath of spleen, mucosa associate lymphatic tissue B lymphocyte Bone marrow Bone marrow superficial zone of lymph node, around the periarterial lymphatic sheath of white pulp of spleen, mucosa associate lymphatic tissue
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Difference between lymph capillaries, lymph vessel and lymphatic duct

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Difference between lymph capillaries, lymph vessel and lymphatic duct    Lymph vessels Collect lymph Drain lymph into the Number Lymph capillary: they begin blindly in the tissue space around the blood capillaries LC collect lymph from tissue space Afferent lymph vessels Many Lymph vessels       Afferent lymph vessels Collect lymph from lymph capillary Adjacent lymph node Many & located around the capsule of lymph node Efferent lymph vessels Collect lymph from lymph node Drain lymph into terminal lymphatic ducts One in number, exit lymph node through in hilum Terminal lymphatic duct : two in number       i) right lymphatic duct Collect lymph from right side of head and ne...
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Difference between three openings of the diaphragm : lecture note

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Difference between three openings of the diaphragm Topics Vena caval opening Esophageal opening Aortic opening Formation By connective tissue membrane By skeletal muscle Aponeurosis (connective tissue) and bone Location In the central tendon slightly to the right of median plane In the muscular part of the diaphragm slightly to the left of median plane In the midline behind the median arcuate ligament Vertebral level In front of the body of T8 In front of the body of T 10 Lower border of body of T12 Shape Quadrangular or square Oval or elliptical Circular or round Structures passing through Inferion vena cava Right phrenic nerve Esophagus Right & left vagal trunks Esophageal branches of left gastric artery Azygos vein Thoraci...
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