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Topic: Infundibular stalk


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In the News (Mon 4 Jun 12)

  
 [No title]
The pituitary gland is suspended by a stalk from the hypothalamus at the base of the diencephalon.
The infundibulum consists of the infundibular stem (neural stalk) and the median eminence (Fig 20-2).
This small (3-5 mm x 5-8 mm), conical organ (the epiphysis cerebri) attaches by a stalk to the roof of the diencephalon near the postcrior aspect of the third ventricle.
www.loyno.edu /~chood/histnotesendo.html   (4938 words)

  
  Infundibular Ligament
The infundibular morphology resembled that the fibers in the periodontal ligament is composed of tributes to the size and strength of the aged hypsodont.
Infundibulum in such a manner that the infundibular and round ligament stumps were placed in a retroperitoneal of the right broad ligament ovarian ligament sprained middle portion of the fallopian ligaments) uterosacral ligaments and the.
The infundibular ligaments attach the ovaries to the uterus by the infundibular.
www.hudsoncampbell.com /infundibular-ligament.htm   (390 words)

  
 ~Pituitary Infundibular Stalk~Info On Thyroid, Pituitary Gland And Thyroidism~Pituitary Infundibular Stalk~   (Site not responding. Last check: 2007-11-02)
The optic chiasm is seen at the beginning of the middle panel and the infundibular stalk of the pituitary gland appears clearly in the rightmost panel of sections.
pathogenesis of the pituitary stalk interruption syndrome with...
infundibular stalk (I), adenohypophysis (A), loops of the internal carotid artery (I) and the sphenoid sinus (*).
www.thyroidorg.com /PituitaryGlands5/pituitaryinfundibularstalk   (1364 words)

  
 Articles - Infundibular stalk   (Site not responding. Last check: 2007-11-02)
Pituitary stalk not labeled, but is the vertical blue portion.
The pituitary stalk, also known as the infundibular stalk or simply the infundibulum is the connection between the hypothalamus and the posterior pituitary.
It carries axons from the magnocellular neurosecretory cells of the hypothalamus down to the posterior pituitary where they release their hormones into the blood.
www.wathcesa.com /articles/Infundibular_stalk   (97 words)

  
 Anatomic and Pathologic Spectrum of Pituitary Infundibulum Lesions -- Hamilton et al. 188 (3): W223 -- American Journal ...
pituitary stalk and the median eminence of the hypothalamus.
is contiguous with the infundibular recess of the third ventricle.
Infundibular stem is always abnormal; in this case, it is markedly attenuated (solid arrow).
www.ajronline.org /cgi/content/full/188/3/W223   (3269 words)

  
 page2   (Site not responding. Last check: 2007-11-02)
This is referred to as the infundibular process, of which a projection, the infundibular stalk is surrounded by the pars tuberalis of the adenohypophysis.
The infundibular stalk is penetrated by capillary loops of the primary portal plexus of the hypothalamic-pituitary portal circulation.
Therefore, the stalk median eminence is bathed with greater concentrations of hormones from both the anterior and posterior lobe of the pituitary than peripheral tissues.
animalscience.unl.edu /442/page2.htm   (6932 words)

  
 Pituitary Lecture handout
Describe the organization of the posterior lobe and infundibular stalk.
Stalk connecting pituitary to brain is called the infundibular stalk.
Region of nervous tissue at the top of the stalk (floor of the third ventricle) is called median eminence.
cellbio.utmb.edu /microanatomy/endocrines/pituitary_lec.htm   (1954 words)

  
 CV   (Site not responding. Last check: 2007-11-02)
A number of small extensions or recesses (optic, pineal, supra pineal, infundibular) arise from the cavity of the third ventricle and project into the surrounding diencephalon.
Notable among these recesses is the infundibular recess which is a funnel-shaped projection from the floor of the third ventricle into the infundibular stalk.
The infundibular stem or stalk attaches the posterior lobe of the pituitary gland to the basal hypothalamus in the midline.
www.umanitoba.ca /faculties/medicine/units/anatomy/cv-third.htm   (227 words)

  
 [No title]
Pars tuberalis is a small outgrowth of the pars distalis that collars the infundibular stalk - which suspends the pituitary gland within the sella turcica (Figure 2-2).
Axons of the supraoptic and paraventricular nuclei pass through the infundibular stalk and into the neurohypophysis (Figure 2-2).
Portal vessels originate at the primary plexus, traverse the infundibular stalk, and end within the secondary plexus.
www.uwyo.edu /wjm/repro/hypo-pit.htm   (1328 words)

  
 Empty Sella Syndrome   (Site not responding. Last check: 2007-11-02)
The key findings that distinguish an empty sella from a cystic mass on MRI are the isointensity of the fluid with cerebrospinal fluid (T1-weighted hypointensity and T2-weighted hyperintensity) and visualization of the infundibular stalk traversing the sellar cavity to the residual pituitary tissue.
In cystic tumors or in cases of cystic degeneration of the pituitary, the infundibular stalk cannot be identified below the top of the tumor.
It is possible that the arachnoidal herniation compresses the pituitary stalk at the rim of the diaphragma or upper portion of the bony sella.
www.pituitaryadenomas.com /emptysella.htm   (3335 words)

  
 [No title]   (Site not responding. Last check: 2007-11-02)
Note the infundibular recess of the 3rd ventricle between the arrow and the optic chiasm.
Note the infundibular recess of the 3rd ventricle in the upper left-hand corner of the slide.
Note the pineal recess of the 3rd ventricle in the stalk at left.
www.georgetown.edu /dml/educ/micro/hypo/hypo.txt   (807 words)

  
 LLU - ENDOCRINE HISTOLOGY
Infundibulum or stalk of pituitary gland (nerve fibers)
Indirect - superior hypophyseal arteries to capillaries in neural stalk where they receive neurosecretions (releasing factors) from axons of cells located in the tuberal nuclei.
These capillaries drain into hypophyseal portal veins which pass around and through the pars tuberalis to the sinuses of the adenohypophysis to control release of its hormones.
www.llu.edu /llu/medicine/anatomy/glossary/syllabus/Endocrine.htm   (1510 words)

  
 Pituitary Gland
The hypophysis lies under the third ventricle of the brain in the sella turcica, a pocket in the floor of the skull.
The infundibular stalk by which it dangles from the overlying hypothalamus is ensheathed by a tubular region called the pars tuberalis.
It is these tracts which transport hormones produced by the hypothalamus down the axons to the posterior pituitary (the neurohypophysis) for temporary storage.
www3.umdnj.edu /histsweb/lab22/lab22pituitary.html   (987 words)

  
 sgdiencephelon
The pineal gland is attached to the diencephalon by a stalk.
At the base of the stalk on either side is the habenular nuclei.
The infundibular stalk is located in almost the middle of the Circle of Willis and the inferior aspectof the hypothalmus is more or less surrounded by the circle.
www.unc.edu /~ears/classes/neuro/studyguides/sgdiencephalon.html   (1871 words)

  
 Endotext.com - Neuroendocrinology, Hypothalamus, And Pituitary, Functional Anatomy of the Hypothalamus and Pituitary
The infundibulum is in direct continuity with the infudibular stem of the posterior pituitary gland, and together with the pars tuberalis of the anterior pituitary, forms the pituitary stalk (Fig.
Two additional symmetric eminences, the lateral eminences, corresponding to the most lateral portion of the hypothalamic wall and the postinfundibular eminence, as well as the symmetric mammillary bodies, complete the macroscopic morphology of the hypothalamic floor.
The third ventricle makes up the core of the hypothalamus and extends into the pituitary (or infundibular) stalk, creating the infundibular recess.
www.endotext.org /neuroendo/neuroendo3b/neuroendo3b_2.htm   (1871 words)

  
 High signal intensity of the infundibular stalk on fluid-attenuated inversion recovery MR -- Araki et al. 18 (1): 89 -- ...
High signal intensity of the infundibular stalk on fluid-attenuated inversion recovery MR -- Araki et al.
PURPOSE: To determine the MR imaging characteristics of the pituitary stalk
stalk was frequently seen on FLAIR MR images of the brain at all ages.
www.ajnr.org /cgi/content/abstract/18/1/89   (304 words)

  
 Committed to safety and excellence in minimally invasive endocrine surgery
This cavity lies in the sphenoid bone and is called the sella turcica.
The gland is attached to the base of the brain by a stalk (infundibular stalk) and is contained in a capsule that is continuous with the dura mater (a tough membrane surrounding the brain).
The portal vessels run down the pituitary stalk (infundibulum) to arrive at the pituitary gland.
www.endocrinesurgeon.co.uk /pituitary/pituitary1-2.html   (360 words)

  
 Endocrine Surgeon   (Site not responding. Last check: 2007-11-02)
This cavity lies in the sphenoid bone and is called the sella turcica.
The gland is attached to the base of the brain by a stalk (infundibular stalk) and is contained in a capsule that is continuous with the dura mater (a tough membrane surrounding the brain).
The portal vessels run down the pituitary stalk (infundibulum) to arrive at the pituitary gland.
www.johnlynn.com /pituitary/pituitary1-2.html   (351 words)

  
 17. Endocrine System
Place the slide under the microscope so that the stalk is towards you and examine it under low power to orient yourself.
Turning to the pituitary stalk, the pars tuberalis is a thin layer of adenohypophysis surrounding a core of nervous tissue (
The pars nervosa is similar in appearance and composition to the stalk except that the axons do not run so straight.
neuromedia.neurobio.ucla.edu /campbell/endocrines/wp.htm   (3342 words)

  
 A&P lab – week 1 handout
Infundibular stalk: attaches pituitary gland to the hypothalamus.
NEUROHYPOPHYSIS = POSTERIOR PITUITARY (pars nervosa + infundibular stalk)
Pituitary stalk (or hypophyseal stalk) = pars tuberalis + infundibular stalk
web.pdx.edu /~karen/303/week2notes.html   (562 words)

  
 Calcium/Calmodulin-Dependent Protein Kinase II Involvement in Release of Gonadotropin-Releasing Hormone - Karger ...
Involvement of calcium/calmodulin-dependent protein kinase II (CaM kinase II) in regulation of GnRH release was tested by determining the effect of CaM kinase II antagonists (KN-62 or KN-93) on GnRH release from rat or cattle infundibular (stalk median eminence) explants.
Preincubation of male rat infundibular explants for 30 min with KN-62 (0.5, 1, 5 or 10 µM) 1.5 h prior to the addition of 59.3 mM (high) K
A longer pretreatment period (2 h) of rat infundibular explants with KN-62 (1 or 10 µM) appeared to enhance the suppressive effect of the CaM kinase II antagonist.
content.karger.com /ProdukteDB/produkte.asp?Doi=54309   (268 words)

  
 Medcyclopaedia - Parasellar tumour   (Site not responding. Last check: 2007-11-02)
The suprasellar subarachnoid space lies above the diaphragma sellae, contains optic nerves and chiasm and the infundibular stalk, and is defined superiorly by the hypothalamus and anterior third ventricle.
Pathology affecting the parasellar region can arise from the pituitary gland, infundibular stalk, hypothalamus, meninges, vessels, cranial nerves and nasopharynx.
Masses can be subdivided according to their location into suprasellar (including the specific spectrum of infundibular stalk masses) and juxtasellar lesions.
medcyclopaedia.com /library/topics/volume_vi_1/p/PARASELLAR_TUMOUR.aspx   (247 words)

  
 Radiology Published Papers
The imaging protocol consisted of sagittal, axial, and coronal pre and postgadolinium T1 SE and coronal T2 TSE sequences.
The images were evaluated for the presence of each of the following: 1-posterior pituitary ectopia; 2-absent or severely hypoplastic infundibular stalk; 3-hypoplastic anterior pituitary gland; 4-sellar, suprasellar, and hypothalamic tumors.
MR imaging is useful in illustrating the spectrum of findings in patients with pituitary dwarfism and in ruling out neo- plastic causes.
www.ebhospital.com /Pub/pub007.htm   (141 words)

  
 Pituitary Lecture handout
Locate the hypophysis: This gland is in a depression at the base of the skull in the sphenoid bone called the "sella turcica".
Consists of gonadotropes and thyrotropes (basophils) although the proportions vary with the species.
These are basically a layer of anterior lobe cells wrapped around pituitary stalk.
www.cytochemistry.net /microanatomy/medical_lectures/pituitary.htm   (1950 words)

  
 Sect. 5, Ch. 3: Anatomy of the Neurohypophysis   (Site not responding. Last check: 2007-11-02)
The infundibular stalk arises in the median eminence and connects the pituitary gland to the hypothalamus, the infundibular process, the pars nervosa or posterior lobe itself (see top figure).
Antidiuretic hormone (ADH) or vasopressin, and oxytocin are synthesized in neurons (cell bodies) located in the supraoptica and paraventricular nuclei in the hypothalamus (see bottom figure).
These neurohormones, which are stored in vesicles, are sent down the nonmylinated axons, through the infundibular stalk and end up in the axonic endbulb (bouton) in the neurolobe proper.
www.lib.mcg.edu /edu/eshuphysio/program/section5/5ch3/s5ch3_2.htm   (220 words)

  
 Lymphocytic Hypophysitis
Also note the enlargement of the infundibular stalk (white arrow).
Once again note the enlargement and enhancement of the stalk (white arrow).
Also, the presence of a thickened and contrast enhancing infundibular stalk is nearly pathognomonic of the condition (10)- see Figure 1.
www.medschool.lsuhsc.edu /neurosurgery/nervecenter/lympho.html   (1598 words)

  
 Jay's Orchid Species Encyclopedia Glossary
Pulvinus a cushion or pad at the insertion of a stalk on a a stem
Scape: a stalk from the base of the plant that has flowers and not leaves
Subsessile: with a partial or very short stalk
www.orchidspecies.com /glossary.htm   (3499 words)

  
 Study Guide For Histology Of The Pituitary Gland
Pars tuberalis--sleeve around neural stalk; basophils and chromophobes; highly vascularized
Know the classical (light microscope) cell types of the adenohypophysis, what hormones they produce and their major actions.
Long portal veins run down pituitary stalk to anterior lobe to become second fenestrated capillary bed
student.ttuhsc.edu /medscbu/MyRock/pituitary.htm   (449 words)

  
 Adult-onset Panhypopituitarism - The Merck Veterinary Manual
The posterior lobe, infundibular stalk, and hypothalamus are compressed or disrupted by neoplastic cells.
The proliferating tumor cells incorporate the remaining structures of the adenohypophysis and infundibular stalk.
The entire hypothalamus may be compressed and replaced by tumor.
www.merckvetmanual.com /mvm/htm/bc/40505.htm   (567 words)

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