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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 oogenesis and spermatogenesis

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Difference between oogenesis and spermatogenesis Location Testes Ovary Number of gamete produce Life long production (millions) Fixed amount ( only mature 400) Per day gemate produce Millions sperm produce per day One ovum   per 28 days cycle Gamete per germ cells Four One ovum and 2-3 polar body Beginning of the process At puberty At fetal life Time of gamete formation Continuous Once in a month End of process Life long but reduces in later part of life End at menopause Time of gamete release Anytime Once in a month Meiotic division Uninterrupted Arrested Name of immature cell Oogonia Spermatogonia Name of mature cell Ovum Spermatozoa Release of germ cell During ejaculation During ovulation Motility of mature germ cell Motile Not motile ...
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Difference between medial and lateral geniculate body

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Difference between medial and lateral geniculate body   Medial geniculate body Lateral geniculate body Oval shaped collection of grey matter on the interior aspect of the pulvinar Bean shapes collection of grey matter on the inferior aspect of the pulvinar Hilum absent Hilum present Last relay station on the auditory   pathway Last relay station on the optic pathway Destruction of medial geniculate on one side has little or no effect on hearing Destruction of lateral geniculate body on one side produces blindness in the opposite half of the field of vision   Sends auditory impulse through auditory radiation to the auditory area of the temporal lobe Sends visual impulses through optic radiation to the visual area of the occipital lobe of cerebrum It is relay with inferior colliculus of midbrain I...
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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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