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 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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