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Topic: Posterior pituitary

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Pituitary

	Pituitary Gland: Encyclopedia of Nursing & Allied Health
		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.
	health.enotes.com /nursing-encyclopedia/pituitary-gland (1737 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.
		The anterior pituitary comprises approximately 80% of the pituitary gland, and is divided into three parts: the anterior lobe, the intermediate zone and the pituitary stalk.
	healthlink.mcw.edu /article/956627185.html (2519 words)

	NeurosurgeryToday.org \| Media Center \| Fact Sheets \| Pituitary Tumors FAQ
		Answer: 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 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)

	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 posterior pituitary develops from the bottom portion of the brain, and is actually an extension of the hypothalamus.
	www.neurosurgerytoday.org /what/patient_e/pituitary.asp (1615 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 is physically attached to the brain by the pituitary, or hypophyseal stalk connected with the median eminence.
		Its posterior lobe is connected to a part of the brain called the hypothalamus via the infundibulum (or stalk), giving rise to the tuberoinfundibular pathway.
	www.bookrags.com /Pituitary_gland (1722 words)

	Endotext.com - Neuroendocrinology, Hypothalamus, And Pituitary, Functional Anatomy of the Hypothalamus and Pituitary
		Galen described the hypothalamic infundibulum and the pituitary gland in De Usu Partium as the draining route and receptacle, respectively, for mucus passing from the brain ventricular structures to the nasopharynx, and named the capillary network surrounding the pituitary gland the rete mirabilis (2).
		Discovery of the connection between the hypothalamus and posterior pituitary (supraoptic-hypophysial tract) by Ramon Cajal in 1894, and subsequent work on neurosecretion in fish hypothalamus by the Sharrers in 1928, set the groundwork for rapid advancement in the understanding of the hypothalamus that unraveled throughout the 20th century and continues into the 21st century.
		The posterior lobe of the pituitary gland is smaller than the anterior lobe and embryologically derives from the neural primordia as an outpouching from the floor of the third ventricle.
	www.endotext.org /neuroendo/neuroendo3b/neuroendo3b.htm (2259 words)

	Pituitary gland - Wikipedia, the free encyclopedia
		Located at the base of the skull, the pituitary gland is protected by a bony structure called the sella turcica of the sphenoid bone.
		The pituitary gland, or hypophysis, is an endocrine gland about the size of a pea that sits in a small, bony cavity (sella turcica) of the sphenoid bone at the base of the brain.
		The anterior lobe is derived from the oral ectoderm and is composed of glandular epithelium.
	en.wikipedia.org /wiki/Pituitary_gland (630 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 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 (2481 words)

	Otolaryngology Houston - MRI Picture of Pituitary Adenoma
		Signs and symptoms of pituitary tumours are either caused by direct pressure from the tumour itself or by a disruption in normal hormone levels.
		Tumours in the posterior pituitary are very rare and disturbances in this area are more likely to be caused by pressure being applied to the area from the surrounding tissues.
		The commonest symptom of a problem in the posterior pituitary is a condition called diabetes insipidus (not the same as diabetes mellitus), the main symptom of which is passing large quantities of very weak urine.
	www.ghorayeb.com /PituitaryMRI.html (842 words)

	Disorders Affecting the Pituitary Gland
		The pituitary gland is sometimes called the master gland of the endocrine system, because it controls the functions of the other endocrine glands.
		The gland is attached to the hypothalamus (a part of the brain that affects the pituitary gland) by nerve fibers.
		The pituitary gland is complex in that it affects many parts of the body with many different hormones.
	www.healthsystem.virginia.edu /uvahealth/peds_diabetes/dapghub.cfm (272 words)

	Pituitary Microadenoma (Site not responding. Last check: 2007-10-11)
		Embyologically the anterior lobe and pars intermedia are derived from Rathke's pouch, and the posterior lobe from an outgrowth of the hypothalamus.
		The posterior lobe is hyperintense on T1W sequences due to phospholipid components of neurosecretory vesicles (Terano et al, 1996).
		The pituitary is an intensely enhancing structure due to the lack of blood brain barrier.
	mripractice.tripod.com /mrpractice/id17.html (1250 words)

	Posterior pituitary - Wikipedia, the free encyclopedia
		The posterior pituitary (or neurohypophysis) comprises the posterior lobe of the pituitary gland and is part of the endocrine system.
		This region consistutes the majority of the posterior pituitary, and is sometimes (incorrectly) considered synonymous with it.
		intermediate/middle/tuberal/pituitary hypothalamus: infundibulum, median eminence, arcuate nucleus, ventromedial nucleus, dorsomedial hypothalamic nucleus, tuber cinereum, pituitary gland (anterior pituitary,
	en.wikipedia.org /wiki/Posterior_pituitary (417 words)

	NDI Terminology - posterior pituitary (Site not responding. Last check: 2007-10-11)
		The posterior lobe of the pituitary gland; the neurohypophysis or pars posterior.
		A powder prepared from the dried posterior pituitary lobe of those domestic animals used for food by man, having the pharmacological actions of its hormones, oxytocin and vasopressin; used mainly as an antidiuretic in the treatment of diabetes insipidus, administered subcutaneously or by nasal inhalation or topical application to the nasal mucosa.
		It may be used to stimulate smooth muscle tissue, especially to produce vasoconstriction in the presence of hemorrhage.
	www.ndif.org /Terms/posterior_pituitary.html (82 words)

	eMedicine - Pituitary Adenoma : Article by Ali Nawaz Khan, MBBS, FRCP, FRCR (Site not responding. Last check: 2007-10-11)
		Pituitary apoplexy is rare complication of pituitary tumors caused by sudden bleeding into the tumor or infarction of the pituitary gland.
		The posterior pituitary is largely composed of the axons of hypothalamic neurons (pituitary stalk), which extend downward as a large bundle behind the anterior pituitary.
		The earliest enhancement of normal structures is seen in the infundibulum and in the posterior lobe of the pituitary gland, followed by gradual enhancement of the anterior lobe from the junction of the infundibulum to the peripheral portion of the anterior lobe of the pituitary gland.
	www.emedicine.com /RADIO/topic557.htm (8861 words)

	Pituitary gland - Psychology Wiki - A Wikia wiki
		The posterior lobe is thus derived from neural ectoderm while the anterior lobe is derived from oral ectoderm.
		It is physically attached to the brain by the pituitary, or hypophyseal stalk connected with the median eminence.
		The pituitary gland is divided into two sections: the anterior lobe (adenohypophysis) and the posterior lobe (neurohypophysis).
	psychology.wikia.com /wiki/Pituitary_gland (580 words)

	The Pituitary Gland
		The pituitary gland lies in the hypophyseal fossa of the sphenoid and is connected to the hypothalamus by the infundibulum, or pituitary stalk.
		The arteries of the pituitary gland arise from the internal carotid arteries as the inferior and superior hypophyseal arteries.
		The posterior lobe or neurohypophysis is a continuation from the hypothalamus.
	au.geocities.com /jess_blair2002/the_pituitary.html (887 words)

	pituitary
		Pituitary adenomas are biologicallly benign tumors originating from adenohypophyseal cells capable of producing various pituitary hormones.
		Pituitary tumors develop in transgenic mice carrying the growth inducer SV-40 T antigen, suggesting that an intrinsic genetic defect leads to clonal expansion of a transformed pituitary cell.
		If this is associated with an impairment of the posterior pituitary lobe function (exceptional in pituitary adenomas) the patient is said to have a panhypopituitarism.
	www.thamburaj.com /pituitary.htm (3464 words)

	Ectopic Posterior Pituitary Lobe and Periventricular Heterotopia: Cerebral Malformations with the Same Underlying ...
		The pituitary gland and sella are small, with a suggestion of a tiny posteriorly angled infundibulum.
		of ectopic posterior pituitary lobe and periventricular heterotopia
		comprises the posterior pituitary lobe, the infundibulum, and
	www.ajnr.org /cgi/content/full/23/9/1475 (3434 words)

	PITUITARY GLAND
		The pituitary gland is part of the endocrine system which consists of glands situated in different areas of the body.
		The pituitary gland is located at the base of the brain in a pocket inside the sphenoid bone known as the sella tursica.
		PITUITARY HORMONES Pituitary secretions are in most part in response to signals from the hypothalamus.
	www.womens-health-naturally.com /pituitary_gland.htm (1329 words)

	Pituitary dwarfism
		Pituitary dwarfism is caused by problems arising in the pituitary gland.
		The primary symptom of pituitary dwarfism is lack of height.
		A careful balancing of all of the hormones produced by the pituitary gland is necessary for patients with panhypopituitarism.
	www.healthatoz.com /healthatoz/Atoz/ency/pituitary_dwarfism.jsp (1726 words)

	Posterior Pituitary Bright Spot in Large Adenomas: MR Assessment of Its Disappearance or Relocation along the Stalk -- ...
		Posterior Pituitary Bright Spot in Large Adenomas: MR Assessment of Its Disappearance or Relocation along the Stalk -- Saeki et al.
		Posterior lobe of the pituitary gland: correlation between signal intensity on T1-weighted MR images and vasopressin concentration.
		MR imaging of the ectopic bright signal of posterior pituitary regeneration.
	radiology.rsnajnls.org /cgi/content/full/226/2/359 (2911 words)

	OHSU Pituitary Unit - About the Pituitary Gland
		The pituitary gland is a small organ (about the size of a pea) which sits in a small bone called the sella turcica ("Turkish saddle") in the center of the skull.
		The pituitary is composed of anterior and posterior portions.
		Specifics about individual pituitary hormones, signs and symptoms of their deficiency, and how to replace them can be found in the section: Pituitary Hormone Deficiency and Replacement.
	www.ohsupituitary.com /patients/about.asp (240 words)

	Pituitary (Site not responding. Last check: 2007-10-11)
		The posterior pituitary gland is in direct continuity with the brain and releases two hormones, oxytocin which stimulates milk production during nursing and uterine contraction during labor, and vasopressin (antidiuretic hormone, ADH) which causes resorption of water from the kidney tubules.
		The pathologist is often called upon to evaluate the pituitary for the presence of an adenoma.
		A frozen section is often performed to confirm the presence of pituitary tissue and confirm the neoplasm.
	www.thedoctorsdoctor.com /bodysites/pituitary.htm (487 words)

	UCLA NEUROSURGERY \| Pituitary Disorders & Diseases
		Since these hormones are necessary for normal pituitary function, damage to the hypothalamus can also result in deficient pituitary gland function.
		Injury to the pituitary can occur from a variety of insults, including damage from an enlarging pituitary tumor, irradiation to the pituitary, pituitary apoplexy, trauma and abnormal iron storage (hemochromatosis).
		This problem arises from damage to the pituitary stalk or the posterior pituitary gland.
	www.pituitary.ucla.edu /Pituitary/PituitaryDis_2.html (641 words)

	Medical Dictionary: Posterior pituitary gland - WrongDiagnosis.com
		Posterior pituitary gland: the posterior lobe of the pituitary body; primarily glandular in nature
		Posterior pituitary gland : The neural or post-neural lobe of the pituitary gland.
		The infundibulum is considered part of the posterior pituitary by most authors.
	www.wrongdiagnosis.com /medical/posterior_pituitary_gland.htm (222 words)

	Posterior Pituitary Ectopia: Another Hint Toward a Genetic Etiology -- Maintz et al. 21 (6): 1116 -- American Journal ...
		The cause of the hyperintense signal of the posterior pituitary
		Transection of the pituitary stalk: development of an ectopic posterior lobe assessed with MR imaging.
		The association of hypopituitarism with small pituitary, invisible pituitary stalk, type 1 Arnold-Chiari malformation, and syringomyelia in seven patients born in breech position: a further proof of birth injury theory on the pathogenesis of "idiopathic hypopituitarism".
	www.ajnr.org /cgi/content/full/21/6/1116 (1667 words)

	Pituitary Gland
		There are three regions of the pituitary gland represented on your slide: the pars distalis (or anterior lobe) and the pars intermedia (or intermediate lobe) of the adenohypophysis and the pars nervosa (or posterior lobe) which is also called the neurohypophysis.
		It is these tracts which transport hormones produced by the hypothalamus down the axons to the posterior pituitary (the neurohypophysis) for temporary storage.
		The pale staining posterior lobe (pars nervosa or neurohypophysis) is not and does not look like glandular tissue, but appear more fibrous.
	www3.umdnj.edu /histsweb/lab22/lab22pituitary.html (987 words)

	Pituitary gland definition - Medical Dictionary definitions of popular medical terms
		The pituitary consists of the anterior and posterior pituitary.
		The anterior pituitary is the front portion of the pituitary.
		The effects of underfunction of the anterior pituitary include growth retardation (dwarfism) in childhood and a decrease in all other endocrine gland functions normally under the control of the anterior pituitary (except the parathyroid glands).
	www.medterms.com /script/main/art.asp?articlekey=4915 (274 words)

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