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hormone produced by the pancreas, which catalyses the conversion of glycogen to glucose.
the membrane that surrounds the nucleus. It is similar in structure and function to the cell...
large spongy organs in which gaseous exchange takes place in vertebrates (with the exception of...
a collection of tissues joined in a structural unit to serve a common function.
the clear colourless fluid that occurs in the spaces, such as the ventricles and central canal,...
outgrowths of neurons (nerve cells) that transmit nerve impulses towards the cell body.