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Topic: Anterior pituitary

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	Highbeam Encyclopedia - Search Results for Anterior pituitary
		The front part or lobe of the pituitary gland that, in response to hormones from the hypothalamus, secretes trophic hormones controlling most of the other endocrine glands in the body, and that also acts directly on somatic cells by secreting growth hormone, affecting bodily...
		The back part or lobe of the pituitary gland that is responsive to a variety of pituitary, adrenal, gonadal, and hypothalamic hormones and that secretes oxytocin and vasopressin in response to neural stimulation.
		A hormone secreted by the anterior pituitary that stimulates the adrenal cortex to secrete steroid hormones such as cortisol (hydrocortisone) into the bloodstream, especially in response to stress (1) or injury.
	www.encyclopedia.com /SearchResults.aspx?Q=Anterior+pituitary (1541 words)

	Reference.com/Encyclopedia/Anterior pituitary
		The anterior pituitary (also called the adenohypophysis, from Greek adeno, "gland"; hypo, "under"; physis, "growth"; hence, glandular undergrowth) comprises the anterior lobe of the pituitary gland and is part of the endocrine system.
		Unlike the posterior pituitary (pars nervosa), which originates from neural ectoderm, the anterior pituitary arises from an invagination of the oral mucosa called Rathke's pouch (which is itself ectoderm derived).
		parvocellular neuroendocrine neurons in the paraventricular and anterior hypothalamic nuclei
	www.reference.com /browse/wiki/Anterior_pituitary (414 words)

	OHSU Pituitary Unit - Hormone Replacement Therapy and Pituitary Hormone Deficiency
		The pituitary gland is a small organ (about the size of a pea) which is attached to the underside of the brain.
		Pituitary hormone deficiency can have many causes including prior pituitary surgery, head irradiation, infiltrative disease, trauma, infection, and genetic abnormalities, but the vast majority of cases are caused by benign pituitary tumors (macroadenomas) pressing on and destroying the cells of the pituitary gland.
		TSH (thyroid stimulating hormone) is made in the anterior pituitary gland and is responsible for stimulating the release of thyroid hormone from the thyroid gland (a small butterfly shaped gland in the neck).
	www.ohsupituitary.com /patients/hormone.asp (1678 words)

	Overview of Hypothalamic and Pituitary Hormones
		The pituitary gland is often portrayed as the "master gland" of the body.
		Such praise is justified in the sense that the anterior and posterior pituitary secrete a battery of hormones that collectively influence all cells and affect virtually all physiologic processes.
		Hypothalamic releasing and inhibiting hormones are carried directly to the anterior pituitary gland via hypothalamic-hypophyseal portal veins.
	arbl.cvmbs.colostate.edu /hbooks/pathphys/endocrine/hypopit/overview.html (415 words)

	Pituitary Gland - MSN Encarta
		In the embryo, the anterior lobe of the pituitary is of ectodermal origin and is formed from the same tissue as the roof of the mouth, whereas the posterior lobe is formed from the embryonic nervous tissue, which forms the part of the brain called the diencephalon.
		These factors are released by hypothalamic neurons into a highly vascularized region of the hypothalamus known as the median eminence, and pass down to act on the anterior pituitary gland in a portal blood supply linking the hypothalamus to the anterior pituitary gland.
		Half of the cells in the anterior pituitary are somatotrophs, which produce growth hormone under the influence of somatostatin from the hypothalamus.
	uk.encarta.msn.com /encyclopedia_761554553/Pituitary_Gland.html (521 words)

	Pituitary Tumors
		The pituitary gland is a kidney bean shaped structure attached to the base of the brain (behind the nose), where it is protected by a small part of the skull called the sphenoid bone.
		The pituitary gland is made up of two different regions, the "anterior pituitary" -- the part of the gland closest to the front of the head -- and the "posterior pituitary" -- the part of the gland closest to the back of the head.
		Pituitary adenomas are benign tumors (meaning that they are non-cancerous and do not travel to other parts of the body) that arise exclusively within the anterior pituitary.
	healthlink.mcw.edu /article/956627185.html (2519 words)

	NeurosurgeryToday.org \| Media Center \| Fact Sheets \| Pituitary Tumors FAQ (Site not responding. Last check: )
		The anterior pituitary is formed from the same tissue as the pharynx (the upper part of the throat).
		The anterior pituitary comprises approximately 80 percent of the pituitary gland, and is divided into three parts: the anterior lobe, the intermediate zone and the pituitary stalk.
		Seventy percent of all metastases to the pituitary (tumor cells that travel to the pituitary from a cancer somewhere else in the body) are found in the posterior lobe.
	www.neurosurgerytoday.org /media/fact/pituitary.asp (2614 words)

	Pituitary Tumor / Stereotactic Radiosurgery
		The pituitary gland is controlled by substances (releasing or inhibitory factors) that are sent by the hypothalamus.
		The pituitary gland is divided into two main parts: The anterior pituitary (adenohypophysis) and the psterior pituitary (neurohypophysis).
		Two-thirds of all pituitary tumors occur in the anterior or front portion of the gland.
	www.irsa.org /pituitary_tumors.html (1410 words)

	anterior pituitary (adenohypophysis)
		The increase of anterior pituitary dopamine in aging C57BL/6J female mice is caused by ovarian steroids, not intrinsic pituitary aging.
		Effect of cerebroventricular anterior pituitary grafts on in situ expression of tyrosine hydroxylase in dopaminergic neurons of the aged animal.
		DNA synthesis in the pituitary gland of the rat.
	www.arclab.org /node_pages/507.html (2380 words)

	NeurosurgeryToday.org \| What is Neurosurgery \| Patient Education Materials \| pituitary tumors
		The pituitary is a small gland attached to the base of the brain (behind the nose) in an area called the pituitary fossa or sella turcica.
		The pituitary gland has two distinct parts: the anterior pituitary is closest to the front of the head, while the posterior pituitary is closest to the back of the head.
		The anterior pituitary is formed from the same tissue as the pharynx (the upper part of the mouth).
	www.neurosurgerytoday.org /what/patient_e/pituitary.asp (1615 words)

	Pituitary Disorders
		Anterior pituitary hormones are regulated by hypothalamic releasing and inhibitory hormones and the negative feedback action of the target glandular hormones at both pituitary and hypothalamic levels (Table 1).
		All anterior pituitary hormones are secreted in a pulsatile fashion and tend to follow a diurnal pattern.
		Pituitary MRI is the preferred diagnostic imaging technique in patients with visual loss or hypopituitarism suggestive of a pituitary tumor (Figure 2).
	www.clevelandclinicmeded.com /diseasemanagement/endocrinology/pituitary/pituitary.htm (4701 words)

	Pituitary Network Association - FAQ
		The pituitary is a small, pea-sized gland located at the base of the brain that functions as "The Master Gland." From its lofty position above the rest of the body it sends signals to the thyroid gland, adrenal glands, ovaries and testes, directing them to produce thyroid hormone, cortisol, estrogen, testosterone, and many more.
		Pituitary disorders can cause a wide spectrum of symptoms, both hormonal and neurological, due to its location near the brain, the intracranial nerves and blood vessels and because of the vital hormonal control that the gland provides.
		Pituitary tumors can either be nonfunctional (that is they do not secrete hormones) or produce specific hormones, such as prolactin (causing infertility, decreased libido, and osteoporosis), growth hormone (causing acromegaly), ACTH (causing Cushing's), TSH (causing hypothyroidism), or be nonfunctional (that is they do not produce hormones).
	www.pituitary.org /faq (2482 words)

	Pituitary gland tumours : Cancerbackup
		The pituitary gland is a small oval-shaped gland found at the base of the brain (see diagram below), below the optic nerve (the nerve which leads to and from the eye).
		Pituitary tumours are one of the most common types and make up nearly one in 10 (10%) of all brain tumours.
		Signs and symptoms of pituitary tumours are caused either by direct pressure from the tumour itself, or by a change in the normal hormone levels.
	www.cancerbackup.org.uk /Cancertype/Brain/Typesofbraintumour/Pituitarytumours (1803 words)

	eMedicine - Prolactin Deficiency : Article Excerpt by Charles T Benson
		The most commonly associated condition is postpartum pituitary necrosis (Sheehan syndrome); however, prolactin deficiency can also be caused by anterior pituitary impairment secondary to pituitary (or extrapituitary) tumor or treatment of tumor, parasellar diseases, head injury, infection (eg, tuberculosis, histoplasmosis), or infiltrative diseases (eg, sarcoidosis, hemochromatosis, lymphocytic hypophysitis).
		Because prolactin release is inversely related to dopamine levels in the anterior pituitary, critically ill patients on prolonged dopamine infusion have resultant prolactin deficiency.
		In association with other anterior pituitary dysfunction, prolactin deficiency is uncommon except with pituitary infarction (Sheehan syndrome).
	www.emedicine.com /med/byname/prolactin-deficiency.htm (724 words)

	GHR 15 – The original, best-selling, all-natural, anti-aging supplement.
		By using these agonists, GHR 15 is able to stimulate your pituitary to secrete extra HGH and then accentuate them to full potential with a proper diet and HGH-releasing exercises.
		It is the most abundant hormone secreted by the pituitary gland, a process which peaks during adolescence.
		GHR Renew-U is used to stimulate the release of growth hormone from the pituitary gland and contains a new Homeopathic HGH powder formula, which puts an extra dose of HGH instantly into the blood stream, able to be absorbed by the liver and converted into IGF-1 for faster uptake.
	www.shopghr15.com /02_product_pg.html (1710 words)

	Chart Disease Anterior Pituitary Hormones
		BASAL BODY The anterior lobe of the anatomy pituitary gland secretes several hormones involved in controlling reproductive processes including secreted by the anterior pituitary gland.
		Imaging Studies pocket eventually becomes the anterior lobe of the pituitary gland is to determine whether the pituitary gland is able to produce the hormones to read small letters on a chart Other anterior pituitary hormones affect growth indirectly by working through other glands.
		Imaging Studies pocket eventually becomes the anterior lobe of the pituitary gland is to determine whether the pituitary gland is able to produce the hormones to read small letters on a chart secreted by the anterior pituitary gland.
	www.norcalbirdexpo.com /chart-of-anterior-pituitary-hormones.htm (616 words)

	Pituitary Gland Information on Healthline
		Neurohormones are synthesized by the hypothalamus and transported to the posterior pituitary.
		As opposed to the anterior pituitary, which is connected to the hypothalamus via the circulatory system, the posterior pituitary receives nerve impulses from the same nerve cells that innervate the hypothalamus.
		Oxytocin—A hormone produced by the posterior pituitary that stimulates the movement of breast milk from the sacs in which the milk is produced to the larger ducts from which the milk is ejected.
	www.healthline.com /galecontent/pituitary-gland (798 words)

	Pituitary Disorders Education & Support
		The anterior pituitary comprises approximately two-thirds of the entire gland and is composed of five different types of cells.
		When the pituitary hormones reach their target organs, these organs are stimulated to release hormones of their own that can then travel to the hypothalamus (among other places).
		Pituitary adenoma is the medical term for a tumor of the pituitary gland.
	www.pituitarydisorder.net /pituitary_information.html (1401 words)

	Pituitary Disorders Education & Support (Site not responding. Last check: )
		The anterior pituitary comprises approximately two-thirds of the entire gland and is composed of five different types of cells.
		When the pituitary hormones reach their target organs, these organs are stimulated to release hormones of their own that can then travel to the hypothalamus (among other places).
		Pituitary adenoma is the medical term for a tumor of the pituitary gland.
	pituitarydisorder.net /pituitary_information.html (1401 words)

	Pituitary Dwarfism Information on Healthline
		Pituitary dwarfism is caused by problems arising from the pituitary gland.
		The pituitary gland, also called the hypophysis, is a gland at the base of the brain that produces many different hormones.
		The anterior pituitary produces six hormones: growth hormone, adrenocorticotropin (corticotropin), thyroid stimulating hormone (thyrotropin), prolactin, follicle stimulating hormone, and lutenizing hormone.
	www.healthline.com /galecontent/pituitary-dwarfism (646 words)

	Pituitary gland Summary
		The pituitary gland, or hypophysis cerebri, is a smallendocrine gland, measuring approximately 1.3 cm (0.5 in), and is situated at the base of the brain, cradled in a fossa of the sphenoid bone.
		The pituitary gland, or hypophysis, is an endocrine gland about the size of a pea that sits in the small, bony cavity (sella turcica) at the base of the brain.
		The pituitary gland is physically attached to the brain by the pituitary, or hypophyseal stalk connected with the median eminence.
	www.bookrags.com /Pituitary_gland (1722 words)

	ACS :: What Are Pituitary Tumors?
		Overproduction of TSH by a pituitary tumor is one cause of hyperthyroidism (overactive thyroid gland).
		There is no reliable way to distinguish pituitary carcinomas from large pituitary adenomas, except when a pituitary tumor spreads to another part of the body -- usually to the brain, spinal cord, meninges (covering layer of the brain and spinal cord), or bone and less often, to the liver, ovaries, heart or lungs.
		In the past, pituitary tumors were classified by their appearance under the microscope after they were removed by surgery.
	www.cancer.org /docroot/CRI/content/CRI_2_4_1x_What_Are_Pituitary_Tumors_61.asp?rnav=cri (1397 words)

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