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  2. Hypophyseal portal system - Wikipedia

    en.wikipedia.org/wiki/Hypophyseal_portal_system

    The hypophyseal portal system is a system of blood vessels in the microcirculation at the base of the brain, connecting the hypothalamus with the anterior pituitary. Its main function is to quickly transport and exchange hormones between the hypothalamus arcuate nucleus and anterior pituitary gland. The capillaries in the portal system are ...

  3. Pituitary apoplexy - Wikipedia

    en.wikipedia.org/wiki/Pituitary_apoplexy

    Pituitary apoplexy is bleeding into or impaired blood supply of the pituitary gland. This usually occurs in the presence of a tumor of the pituitary, although in 80% of cases this has not been diagnosed previously. The most common initial symptom is a sudden headache, often associated with a rapidly worsening visual field defect or double ...

  4. Pituitary gland - Wikipedia

    en.wikipedia.org/wiki/Pituitary_gland

    The pituitary gland or hypophysis is an endocrine gland in vertebrates. In humans , the pituitary gland is located at the base of the brain , protruding off the bottom of the hypothalamus . The human pituitary gland is oval shaped , about 1 cm in diameter, 0.5–1 gram (0.018–0.035 oz) in weight on average, and about the size of a kidney bean .

  5. Sheehan's syndrome - Wikipedia

    en.wikipedia.org/wiki/Sheehan's_syndrome

    Sheehan's syndrome. Sheehan's syndrome, also known as postpartum pituitary gland necrosis, occurs when the pituitary gland is damaged due to significant blood loss and hypovolemic shock (ischemic necrosis) or stroke, originally described during or after childbirth leading to decreased functioning of the pituitary gland (hypopituitarism). [1]

  6. Hypopituitarism - Wikipedia

    en.wikipedia.org/wiki/Hypopituitarism

    As a pregnancy comes to term, a pregnant woman's pituitary gland is vulnerable to low blood pressure, such as may result from hemorrhage; pituitary damage due to bleeding after childbirth is called Sheehan's syndrome. Pituitary apoplexy is hemorrhage or infarction (loss of blood supply) of the pituitary. Other forms of stroke are increasingly ...

  7. Endocrine system - Wikipedia

    en.wikipedia.org/wiki/Endocrine_system

    Endocrine glands are glands of the endocrine system that secrete their products, hormones, directly into interstitial spaces where they are absorbed into blood rather than through a duct. The major glands of the endocrine system include the pineal gland , pituitary gland , pancreas , ovaries , testes , thyroid gland , parathyroid gland ...

  8. Anterior pituitary - Wikipedia

    en.wikipedia.org/wiki/Anterior_pituitary

    A major organ of the endocrine system, the anterior pituitary (also called the adenohypophysis or pars anterior) is the glandular, anterior lobe that together with the posterior lobe (posterior pituitary, or the neurohypophysis) makes up the pituitary gland (hypophysis) which, in humans, is located at the base of the brain, protruding off the bottom of the hypothalamus.

  9. Posterior pituitary - Wikipedia

    en.wikipedia.org/wiki/Posterior_pituitary

    The posterior pituitary (or neurohypophysis) is the posterior lobe of the pituitary gland which is part of the endocrine system. The posterior pituitary is not glandular as is the anterior pituitary. Instead, it is largely a collection of axonal projections from the hypothalamus that terminate behind the anterior pituitary, and serve as a site ...