Anatomy word of the month: pituitary

Pituitary
Copyright Elsevier Inc. www.netterimages.com Netter, Atlas of Human Anatomy, 6e

“Mucus, phlegm” in Latin.  Ancient anatomists thought the pituitary produced the mucous secretions of the nose.  The pituitary is a pea-sized gland hanging from a stalk on the undersurface of the brain.  It is well protected in a bony depression, the sella turcica, in the floor of the cranial cavity.  The gland is located near the top of the nasal cavity, and there is a floor drain-like bone called the cribriform plate (sieve-like, Latin) in front of it that makes the ancient idea not too far-fetched.  However, the gland has more important duties controlling the hormones of the ovaries/testes, thyroid gland, adrenal glands and milk secretion (in lactating females), among other activities.  Signs of pituitary tumors vary according to what hormone is involved.  For example, a pituitary tumor in a growing child producing growth hormone can lead to “giantism”.

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