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 chromosome, chromatin and chromatid

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Difference between chromosome, chromatin and chromatid 

Chromosome
Chromatin
Chromatid
Chromosomes: a threadlike strand of DNA that appear in a cell nucleus during cell division, (consisting of genes that are responsible for the transmission of hereditary characteristics)
Chromatin  - the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins; during mitotic division it condenses into chromosomes
Chromatid - one of two identical strands into which a chromosome splits during mitosis
Seen during cell division
Seen in Inter-phase
Seen during cell division

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