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Jugular vein

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There are two jugular veins on each side of the neck, the external and internal jugular vein. these drains the venous blood from the head and neck region. Internal jugular vein The internal jugular vein is the smaller of the two veins and is formed by the union of occipital, thyroid and laryngeal radicles. It

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Structure of Spinal cord

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The spinal cord is that part of the central nervous system situated in the vertebral canal. It extends from the foramen magnum to about the middle of the sacrum. It is approximately cylindrical and more or less compressed from above downward. It is continuous with the medulla oblongata at the foramen magnum, where there is

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