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 vasculogenesis & angiogenesis

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Difference between vasculogenesis & angiogenesis

Vasculogenesis
Angiogenesis
•      It is the process of formation of new vessels from blood islands
•      it is the process of formation of new vessels by budding and branching from pre-existing vessels
vasculogenesis generally occurs when the primary blood system is being created or changed.
Angiogenesis is the growth most often associated with damaged or smaller blood vessels,
Vasculogenesis occurs during the very early developmental stages of an organism when the blood vessel pathways are created.
Angiogenesis, while a similar process, does not depend on the same genes for activation as vasculogenesis and occurs instead in the presence of an injury to a blood vessel, such as a cut or the slight damage done to the ovary post-ovulation.
vasculogenesis creates the blood vessels .
Angiogenesis is a remodeling process only,
Vasculogenesis takes place when mesodermal cells connected to the bone marrow split into endothelial cells, which in turn form blood capillaries. This takes place very early in a human's development, usually only several days after conception.
Angiogenesis is a type of blood vessel creation that can happen any time during an organism's life, and does not occur only at the organism's formation. It is most often associated with repairing damage to the blood vessels or creating smaller blood vessels in the network. Angiogenesis comprises two different mechanisms: endothelial sprouting and intussusceptive microvascular growth (IMG). The sprouting process is based on endothelial cell migration, proliferation and tube formation. IMG divides existing vessel lumens by formation and insertion of tissue folds and columns of interstitial tissue into the vessel lumen.
Scientists are transplanted endothelial cells which stimulate vasculogenesis to help treat innate blood vessel conditions.
Scientists are working on developing supplements for angiogenesis are designed to help keep blood vessels strong and aid in quick wound recovery,
Vasculogenesis gives rise to the heart and the first primitive vascular plexus inside the embryo and in its surrounding membranes, as the yolk sac circulation.
Angiogenesis is responsible for the remodeling and expansion of this network. While vasculogenesis refers to in situ differentiation and growth of blood vessels from mesodermal derived hemangioblasts,

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