What is the pituitary gland?

 Pituitary gland - is a small structure about the size of a pea which is attached to the base of the brain. It consists of four parts and is the most important gland in the body for it controls the hormone output of all the ther ductless glands including the thyroid and organ glands.
 The pituitary hangs by a little stalk just behind the nasal passage and was named after the Latin word for "nasal secretion" by the Belgian Andreas Vesalius (1514-1564), known as the "father of anatomy", who mistakenly believed that it discharged mucus into the nose.
  It the pituitary is not functioning properly gigantism or dwarfism may result. Premature old age extreme thinness, extreme fatness and disturbances in sexual development are other disorders which may occur.

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