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the nerve cells that transmit nerve impulses towards the central nervous system from the receptors.
blood that has no antigens (blood group O) and can be given to a person with any blood group....
the process whereby nutrients that have been absorbed from the digestive system are taken up by...
a social structure in which different classes are determined by heredity.
the liquid found in the pleural cavity that acts as a lubricant.
a clear, colourless solution of hydrogen chloride (HCl) in water. It is a strong and highly...