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PITUITARY GLAND BASIC SCIENCE

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Adenohypophysis (anterior lobe)

Comprises 75% of the total volume

Predominant blood supply Hypophyseal-portal system Hypothalamic releasing hormones

reach the pituitary by this pathway

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“Master gland"

Anterior pituitary controls the functions of other

endocrine glands

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Posterior lobe

Arises from a down growth of the hypothalamus

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Pituitary gland (hypophysis cerebri)

Weight - about 500 mgLies within the hypophyseal

fossa of the sphenoid

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What forms the roof of the sella?

Diaphragma sella Fold of dura Above the diaphragma sella lies the

optic chiasm

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