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	Untitled
		Plane of section is parasagittal, demonstrating pars distalis, pars intermedia and pars nervosa with a portion of its stalk.
		Pars distalis can be identified by its large number of chromophobes (pale blue to blue grey), along with occasional acidophils (brownish-red) and basophils (blue to bluish purple); it also exhibits abundant collagenous tissue.
		The pars intermedia (stained a darker blue) is separated from the pars distalis by the intraglandular cleft.
	www.urmc.rochester.edu /smded/Histology/Manuals/Slides/HistoLoanSlides125-178.html (4187 words)

	Physiologyadenohypophysis
		The pars tuberalis is applied to the surface of the median eminence and the upper infundibular stem- rostral regions of the neurohypophysis.
		The venous drainage of the adenohypophysis is from the pars distalis to the adjacent cavernous sinus.
		As neurosecretory cells terminate on median eminence capillaries that drain to the pars distalis via portal routes and on capillaries in the infundibular stem and neural lobe that drain to the adjacent pars distalis, the entire neurohypophyseal capillary bed may be viewed as the final common pathway to the pars distalis.
	www.pituitaryadenomas.com /physiologyadenohypophysis.htm (9114 words)

	Pars intermedia - Wikipedia, the free encyclopedia
		Pars intermedia is the boundary between the anterior and posterior lobes of the pituitary.
		However, the pars intermedia is normally either very small or entirely absent in adulthood.
		In lower vertebrates (fish, amphibians) MSH from the pars intermedia is responsible for darkening of the skin, often in response to changes in background color.
	en.wikipedia.org /wiki/Pars_intermedia (147 words)

	[No title]
		The pars intermedia is a narrow band of adenohypophyseal tissue that borders the neurohypophysis.
		Pars Tuberalis: This funnel-shaped superior extension of the pars distalis surrounds the infundibular stem (Fig 20-2).
		Pars Intermedia: This is a band or wedge of adenohypophysis between the pars distalis and pars nervosa; it is rudimentary in humans.
	www.loyno.edu /~chood/histnotesendo.html (4938 words)

	Characterization and Distribution of Gonadotrophs in the Pars Distalis and Pars Tuberalis of the Equine Pituitary Gland ...
		the pars intermedia in the PD and in the caudal ventral region
		Characterisation and distribution of gonadotrophs in the pars distalis and pars tuberalis of the equine pituitary gland throughout the seasonal reproductive cycle.
		The relationship of pars tuberalis to pars distalis in the hypophysis of the rhesus monkey.
	www.biolreprod.org /cgi/content/full/63/3/826 (4591 words)

	ENDOCRINE SYSTEM (Site not responding. Last check: 2007-09-29)
		The pituitary gland is divided into a pars nervosa, pars intermedius, pars tuberalis, and pars distalis.
		The largest portion of the pituitary is the pars distalis (a), which is glandular and secretes numerous hormones.
		Between the pars anterior and the pars nervosa is the pars intermedia, which frequently presents an intraglandular cleft, a remnant of Rathke's pouch.
	kobiljak.msu.edu /CAI/Histology/Hist08_01.htm (108 words)

	Home Page
		The adenohypophysis consists of the pars distalis, the pars tuberalis and the pars intermedia.
		It lies against the pars nervosa, separated from the pars distalis by colloid-containing vesicles, called Rathke’s cysts, which are the remnants of the cavity of Rathke's pouch.
		The rather grainly appearance of the pars nervosa is due to the abundant pituicyte nuclei.
	courseweb.edteched.uottawa.ca /medicine-histology/English/Endoctrine/Default.htm (4972 words)

	[No title] (Site not responding. Last check: 2007-09-29)
		The pars nervosa or posterior pituitary is readily recognized by the presence of purple-staining neurosecretory material.
		The pars distalis or glandular part of the adenohypophysis is seen at the right.
		Note the PAS positive, colloid-filled follicles of the pars intermedia, which marks the junction between the pars nervosa and pars distalis.
	www.georgetown.edu /dml/educ/micro/hypo/hypo.txt (807 words)

	Pars intermedia pro-gamma-melanotropin and a cleft protease, a mitotic conspiracy in the pituitary?
		Pars intermedia pro-gamma-melanotropin and a cleft protease, a mitotic conspiracy in the pituitary?
		RT-PCR of mRNA isolated separately from the pars intermedia and pars distalis suggested that this protease is also expressed in both parts of the pituitary gland but surprisingly confocal microscopy in situ hybridisation located it to the colloid cells in the cleft.
		Some cells of the pars distalis are known to proliferate under certain conditions e.g.
	www.endocrine-abstracts.org /ea/0002/ea0002oc18.htm (334 words)

	HistoLab Part 14
		H & E section of hypophysis, with the darker pars distalis on the left and the paler pars nervosa on the right.
		In this particular instance, the pars intermedia is fused with the pars distalis to the left, and the lumen of Rathke's pouch has disappeared.
		Pars distalis stained with H & E. There are several purple basophils in the center and a good clump of pink acidophils above them.
	www.meddean.luc.edu /lumen/MedEd/Histo/frames/Histo14.html (1041 words)

	ENDOCRINE SYSTEMS
		The pituitary gland is composed of four anatomical parts: (1) the pars distalis or anterior pituitary; (2) pars tuberalis; (3) pars intermedia, and (4) pars nervosa or posterior pituitary (Pituitary).
		The pars distalis is separated from the pars nervosa by a cleft or row of follicles.
		The pars nervosa or posterior pituitary is composed of the axonal projections of the hypothalamohypophyseal tract.
	lifesci.rutgers.edu /~babiarz/end.htm (826 words)

	ENDOCRINE GLANDS
		Study the infindibular stalk leading to the posterior pituitary or pars nervosa (which is missing on most sections of this slide.
		The pars distalis, cleft, and the adjacent pars intermedia, as well as, the posterior lobe are present, as is the infundibular recess of the third ventricle.
		Drawing of the hypophysis and cells of the pars distalis.
	www.mc.vanderbilt.edu /histology/labmanual2002/labsection3/PituitaryandPinealGlands03.htm (1364 words)

	Histology BIOL-4000 - Endocrine organs - LECTURE NOTES 10
		Separated from pars distalis by "primitive fissure" which is the remainder of the cavity within the invagination that formed RathkeÌs pocket.
		The cells of the pars distalis are caused to secrete various hormones by the action of hormonal factors released from the hypothalamus.
		The pars nervosa and the stem of the posterior lobe are mainly composed of unmyelinated axonal processes.
	auburn.edu /academic/classes/zy/hist0509/html/Lec10Endocrineorgans.html (2478 words)

	ENDOCRINE SYSTEM
		The pars nervosa in the pituitary section on slide a-84 #2314 is better stained (a further description given below should be read after that of the pars distalis).
		In the pars distalis, many of the cells are rounded and their cytoplasmic granules stain red.
		In the pars distalis, the alpha cell (somatotrope) is stained intensely orange, and is round with a small nucleus.
	medocs.ucdavis.edu /CHA/402/labsyl/01/11.htm (1867 words)

	Localization of Leptin Receptor-Like Immunoreactivity in the Corticotropes, Somatotropes, and Gonadotropes in the Ovine ...
		distalis and 94% of the cells in the pars tuberalis.
		Panels M–P provide examples for pars distalis gonadotropes; double labeling is seen in cells in panels M and N, whereas single and double labeling is seen in panels O and P. Panels Q–T are examples of labeling of gonadotropes in the pars tuberalis.
		of gonadotropes in the pars tuberalis of the sheep (48), and
	endo.endojournals.org /cgi/content/full/141/4/1515 (4669 words)

	Differential regulation of proopiomelanocortin messenger ribonucleic acid in the pars distalis and pars intermedia of ...
		Differential regulation of proopiomelanocortin messenger ribonucleic acid in the pars distalis and pars intermedia of the pituitary gland after prolonged hypoxemia in fetal sheep -- Braems et al.
		distalis, and contributes to the stimulus for birth.
		in the pars distalis and pars intermedia of the pituitary in fetal sheep.
	endo.endojournals.org /cgi/content/abstract/137/7/2731 (554 words)

	Endocrine System
		The pars nervosa is primarily made of axons, nerve endings, and supporting cells called pituicytes.
		The nuclei observed in the pars nervosa are mostly from the pituicytes which are a glial-like cell.
		Like the pars nervosa, there is a rich capillary supply within the pars distalis to carry secreted products into the systemic vasculature.
	anatomy.iupui.edu /courses/histo_D502/D502f02/Endocrine/Lab.16.endo.f02.html (1918 words)

	LLU - ENDOCRINE HISTOLOGY
		Anterior becomes pars distalis; posterior wall becomes pars intermedia.
		Pars anterior - very cellular; large (acidophils and basophils) and small (chromophobes) in clumps and cords between venous sinusoids.
		Pars intermedia - many small cells (nuclei close together) sometimes form colloid filled follicles, their function in the human is not clear but may be related to corticotrophs.
	www.llu.edu /llu/medicine/anatomy/glossary/syllabus/Endocrine.htm (1510 words)

	Occurrence of colloid-containing follicles in the pars distalis of pituitary glands from aging guinea pigs. (Site not responding. Last check: 2007-09-29)
		Occurrence of colloid-containing follicles in the pars distalis of pituitary glands from aging guinea pigs.
		Colloid-containing follicles in the pars distalis of pituitary glands from guinea pigs at various ages ranging from 5 days to 36 months were examined by the periodic acid-Schiff (PAS) reaction, immunohistochemistry, and electron microscopy.
		These findings suggest that the formation of colloid-containing follicles in the guinea-pig pars distalis is an aging phenomenon.
	www.arclab.org /medlineupdates/abstract_2009544.html (254 words)

	The Pituitary Gland: Introduction - The Merck Veterinary Manual
		The adenohypophysis, which surrounds the pars nervosa of the neurohypophyseal system to varying degrees in different species, consists of the pars distalis, the pars tuberalis, and the pars intermedia.
		The pars intermedia forms the junction between the pars distalis and pars nervosa.
		A specific population of endocrine cells in the pars distalis (and in the pars intermedia for ACTH in dogs) synthesizes and secretes each of the pituitary trophic hormones.
	www.merckvetmanual.com /mvm/htm/bc/40500.htm (711 words)

	Pars distalis cell quantification in normal adult male and female rats -- Dada et al. 101 (1): 87 -- Journal of ...
		Pars distalis cell quantification in normal adult male and female rats -- Dada et al.
		We analysed cell types in the pars distalis of normal young adult male and female rats with respect to their percentages and the relative volumes they occupy.
		The percentages of pars distalis cells which did not stain with the antisera to the six classical hormones were 17.47 in male and 16.48 in female rats.
	joe.endocrinology-journals.org /cgi/content/abstract/101/1/87 (332 words)

	e-Prints Soton - Photoperiodic regulation of prolactin gene expression in the Syrian hamster by a pars ...
		Pituitary prolactin gene expression, restricted to the pars distalis, was increased in hamsters maintained in long daylengths (16 h : 8 h, light : dark) compared to hamsters exposed to short daylengths (8 h : 16 h, light : dark) for 8–12 weeks.
		Analysis of single cells by in situ hybridization showed that photoperiod had no effect on the percentage of pars distalis cells expressing prolactin mRNA, but shifted the frequency distribution of prolactin mRNA expression per cell, such that in long photoperiods a greater proportion of cells were recruited to a higher expressing population.
		In vitro coculture of hamster pars tuberalis fragments increased prolactin promoter-driven luciferase activity in stably transfected GH3 cells in a dose- and duration-dependent manner.
	eprints.soton.ac.uk /25995 (442 words)

	[No title]
		The pars nervosa secretes the hormones oxytocin (which causes uterine contractions and milk ejection from mammary glands) and ADH (antidiuretic hormone which causes the kidney tubules to resorb water from the glomerular filtrate and also causes vasoconstriction, hence the alternate name - vasopressin).
		The stimulus for the release of hypothalamic releasing factors (RF) is the circulating level in the blood of the hormones whose output is regulated by the trophic hormones of the pars distalis of the pituitary gland.
		This increase in photoperiod is detected by the eyes and the increased stimulation of the optic nerve results in impulses passed along in the brain to the hypothalamus.
	www.holycross.edu /departments/biology/whealy/notes_text/bn.text (1245 words)

	Immunocytochemical analysis of somatotrophs and mammotrophs in the pars distalis of postnatal dwarf (dw) mutant mice. (Site not responding. Last check: 2007-09-29)
		Immunocytochemical analysis of somatotrophs and mammotrophs in the pars distalis of postnatal dwarf (dw) mutant mice.
		The postnatal differentiation of somatotrophs and mammotrophs in the pars distalis of normal and dwarf (dw/dw) mice was analyzed by means of immunocytochemistry at the electron-microscopic level.
		However, at 6 days postnatally, some cells in the dwarf pars distalis showed a positive reaction with anti-GH, though the reaction was not as strong as in the 6-day normal pars distalis.
	www.arclab.org /medlineupdates/abstract_2420462.html (211 words)

	[No title]
		The neurohypophysis consists of the pars nervosa and the infundibulum (infundibular stem + median eminence of the tuber cinereum).
		No, the answer is B. The pars tuberalis is a projection or extension from the pars anterior which extends up along the anterior and lateral aspects of the pituitary stalk.
		The cell types of the pars distalis are classified as chromophils and chromophobes based upon their relative avidity or lack of affinity for dyes used in staining procedures.
	www.kumc.edu /research/medicine/pharmacology/CAI/webCAI/anatomy/to11.wbc (2482 words)

	page4 (Site not responding. Last check: 2007-09-29)
		The pars intermedia is distinguishable in human infants but becomes part of the pars nervosa and pars distalis in adults.
		Birds do not have a pars intermedia but the cells that form this gland in other species are thought to reside in the pars distalis of birds.
		The size of the pars intermedia in a species is generally related to the ability of the species to change colors in conformity with the substratum - the material on or in which the species resides.
	animalscience.unl.edu /442/page4.htm (9880 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.
		The anterior lobe (pars distalis) has cords or clusters of cells separated by a rich capillary and sinusoidal bed.
		The intermediate lobe (pars intermedia) is not well defined in the human, and is much larger in animals (i.e., the cat pituitary, Slides 157 and 229).
	www3.umdnj.edu /histsweb/lab22/lab22pituitary.html (987 words)

	Pituitary gland (hypophysis)-The pituitary gland lies in the hypophyseal fossa of the sphenoid and (in the bony sella ...
		The cells of Rathke's pouch proliferate to form the pars distalis, and extend up the anterior aspect of the infundibulum as the pars tuberallis.
		Control of the hormone producing cells of the pars distalis is through secretion by cells of the hypothalamus.
		The pars intermedia is not well developed and it is thought that its cells produce pre-pro-opiomelanocortic peptides.
	personal.jax.bellsouth.net /y/a/yarblar/ACTH-n-MSH.htm (2201 words)

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