• The median eminence is generally defined as the portion of the ventral hypothalamus from which the portal vessels arise. (wikipedia.org)
  • The median eminence is a part of the hypothalamus from which regulatory hormones are released. (wikipedia.org)
  • The pars nervosa (part of the posterior pituitary gland) is continuous with the median eminence of the hypothalamus via the infundibular stalk. (wikipedia.org)
  • Parvocellular neurosecretory cells from the hypothalamus terminate in the median eminence of the hypothalamus. (wikipedia.org)
  • The median eminence is the structure where secretions of the hypothalamus (releasing and inhibiting regulatory hormones, known as "hypophysiotropic hormones") collect before entering the portal system emptying into the general circulation. (wikipedia.org)
  • Further, anatomical evidence exists for bidirectional communication between the median eminence and the arcuate and ventromedial nucleus of the hypothalamus. (wikipedia.org)
  • Norepinephrine attenuates hypoxia-inhibited thyrotropin-releasing hormone release in median eminence and paraventricular nucleus of rat hypothalamus. (nel.edu)
  • The arcuate nucleus (ARC) of the hypothalamus, which is located between the third ventricle and the median eminence, integrates these energy homeostatic feedback mechanisms. (medscape.com)
  • Mast cells are located perivascularly (= in blood vessels) in close proximity to neurons (= nerve cells) in the thalamus and hypothalamus, (= parts of the brain) especially the median eminence, where they are juxtaposed to corticotropin-releasing hormone (CRH)-positive nerve processes. (meassociation.org.uk)
  • Take on this cost may are synonymous the action of hormones to the hypothalamus versus the anterior pituitary are complicated by blood flow through the portal system from the median eminence to the pituitary on the one hand and by technical difficulties causing drugs to travel in the. (showyou.com)
  • Thus, effects of multiple injections of ETOH on the relative amount of immunoreactive LHRH fibers in the hypothalamus and median eminence (ME) of castrate and intact male rats were determined immunocytochemically. (tamu.edu)
  • We reveal that NG2-glia contact the dendritic processes of arcuate nucleus leptin receptor (LepR) neurons in the median eminence (ME) and that these processes degenerate upon NG2-glia elimination, which explains the consequential attenuation of these neurons' molecular and electrical responses to leptin. (uni-muenchen.de)
  • Note that in addition to projections to the external zone of the median eminence, these neurons may also have reciprocal connections. (endotext.org)
  • The rats bearing implants of NE in the median eminence-arcuate nucleus region (MAR) showed irregular estrous cycles or prolonged diestrus and their ovaries had few follicles and atrophic corpora lutea. (karger.com)
  • The hypothalamic arcuate nucleus-median eminence is a target for sustained diabetes remission induced by fibroblast growth factor 1. (nature.com)
  • Galanin-like peptide (GALP) is a newly discovered molecule whose expression in the brain is confined to the arcuate nucleus and median eminence. (washington.edu)
  • It is suggested that dopamine exerts an inhibitory control over prolactin release from the adenohypophysis by inhibiting the release of prolactin-inhibiting factor (PIF) from the median eminence and by acting directly on the pituitary to suppress prolactin release. (elsevierpure.com)
  • Ojeda, SR, Harms, PG & McCann, SM 1974, ' Effect of Blockade of Dopaminergic Receptors on Prolactin and LH Release: Median Eminence and Pituitary Sites of Action ', Endocrinology , vol. 94, no. 6, pp. 1650-1657. (elsevierpure.com)
  • Through projections to the pituitary gland, median eminence and hindbrain, the PVN plays a role in stress response and other autonomic functions. (queensu.ca)
  • The rats implanted with DB in MAR had prolonged diestrus, and their uteri showed decidual reaction, indicating that an α-adrenergic mechanism is involved in the release of PTF from the median eminence. (karger.com)
  • In these rats, stimulation of the ARH or median eminence produced increases in LH release, whereas stimulation in other hypothalamic areas outside the ARH was ineffective. (eurekamag.com)
  • It accesses the short- and long-term hormonal and nutrient signals from the periphery via semi-permeable capillaries in the underlying median eminence and receives neuronal feedback from the NTS. (medscape.com)
  • Neuronal and glial differentiation within expanded glial cultures derived from the lateral and medial ganglionic eminences. (lu.se)
  • A median protuberance, the tuber cinereum lies between the optic chiasm (rostrally) and mammillary bodies (caudally) and is continuous anteriorly with the lamina terminalis. (medscape.com)
  • The rudimentary lateral thyroid develops from neural crest cells, while the median thyroid, which forms the bulk of the gland, arises from the primitive pharynx. (medscape.com)
  • As the thyroid gland descends, it forms its mature shape, with a median isthmus connecting the two lateral lobes. (medscape.com)
  • The NCStat device followed an automated testing protocol to measure median and ulnar distal motor latencies (wrist-thenar eminence and wrist-hypothenar eminence) and distal sensory latencies (wrist-third finger and wrist-fifth finger).7 Abnormal median nerve conduction was defined as sensory latency more than 3.5 ms (14 cm) or motor latency more than 4.5 ms or median-ulnar sensory latency difference of more than 0.5 ms (14 cm). (cdc.gov)
  • In clinical settings, some case reports suggest that associated median and ulnar neuropathies affect prognosis after nerve release. (cdc.gov)
  • Nerve injury (median and ulnar nerves) is uncommon and can be due to local swelling, entrapment, or traction during the reduction. (msdmanuals.com)
  • As one of the seven areas of the brain devoid of a blood-brain barrier, the median eminence is a circumventricular organ having permeable capillaries. (wikipedia.org)
  • Direct injections of IL-1 beta into the hypothalamic median eminence (ME), a site which lacks a blood-brain barrier, has been shown to rapidly induce ACTH secretion. (cornell.edu)
  • The thyroid initially arises caudal to the tuberculum impar, which is also known as the median tongue bud. (medscape.com)
  • Intraventricular injection (icv) of NE (4 nmol/L) induced a decrease in TRH levels in the median eminence (ME) and PVN, and an increased serum T3 levels following hypoxia of 7 km exposure for 2 h, compared with icv saline control, indicating TRH release increased. (nel.edu)
  • This study demonstrated that hypothalamic InsR signals suppress the stress response to restraint, possibly by influencing AVP release to the median eminence and decreasing hypothalamic glucocorticoid receptor (GR) signals, and may also modulate anxiety-like behaviors. (columbia.edu)
  • This small (3-4 mm in thickness in human) neuro-endocrine brain region, located just above the median eminence, is comprised of cell types that subserve specific metabolic and behavioral aspects of the control of body weight, as well as hepatic glucose production, body temperature, autonomic physiology, neuroendocrine axes, serum osmolarity and circadian rhythms. (columbia.edu)
  • Implantation of Pimozide into the median eminence-arcuate region evoked a gradual consistent increase in prolactin which became significant at 1 hr, and was accompanied by a small decline in plasma LH at 4 hr. (elsevierpure.com)
  • The thyroid gland forms as a proliferation of endodermal epithelial cells on the median surface of the developing pharyngeal floor. (medscape.com)
  • Small assemblies of hypothalamic "parvocellular" neurons release their neuroendocrine signals at the median eminence (ME) to control long-lasting pituitary hormone rhythms essential for homeostasis. (ox.ac.uk)
  • 19. Tanycyte ablation in the arcuate nucleus and median eminence increases obesity susceptibility by increasing body fat content in male mice. (nih.gov)
  • the density of processes is generally low, except in the septohypothalamic nucleus, ventromedial bed nucleus of the stria terminalis, arcuate nucleus, and internal and external median eminence. (up.ac.za)
  • The pituitary stalk, which connects the median eminence to the pituitary gland, passes through an opening in the dura surrounding the brain. (nih.gov)
  • The cerebrospinal fluid (CSF)/serum leptin ratio is decreased in obesity 17 , and leptin transport by median eminence tanycytes is impaired in obese mice 18 . (nature.com)
  • 7. Age-related changes in the morphology of tanycytes in the human female infundibular nucleus/median eminence. (nih.gov)
  • Área elevada de la región infundibular del HIPOTÁLAMO, situada en la cara inferior del suelo del tercer ventrículo del ENCÉFALO, al lado del NÚCLEO ARQUEADO DEL HIPOTÁLAMO. (bvsalud.org)
  • Specifically, using a microdialysis method, we examined the effects of BPA (0.1, 1, and 10nM) directly infused to the stalk-median eminence on the release of GnRH and kisspeptin (KP) in mid to late pubertal ovarian intact female rhesus monkeys. (nih.gov)
  • The external median eminence is the only site with conspicuously overlapping distributions of the respective immunoreactivities and, accordingly, a putative site for kisspeptin's regulation of GnRH‐1 release in this species. (up.ac.za)
  • In the nonbreeding season in males, there is an increase in the rostral population of GnRH‐1‐ir cell bodies and density of GnRH‐1‐ir processes in the median eminence. (up.ac.za)
  • GnRH released at the median eminence acts on the anterior pituitary gonadotrophs, which then release luteinizing hormone (LH) and follicle-stimulating hormone (FSH) into the peripheral circulation. (elifesciences.org)
  • Confirm by looking for wasting of the thenar eminence and test for sensory loss in the median nerve distribution. (gponline.com)
  • The NCStat device followed an automated testing protocol to measure median and ulnar distal motor latencies (wrist-thenar eminence and wrist-hypothenar eminence) and distal sensory latencies (wrist-third finger and wrist-fifth finger).7 Abnormal median nerve conduction was defined as sensory latency more than 3.5 ms (14 cm) or motor latency more than 4.5 ms or median-ulnar sensory latency difference of more than 0.5 ms (14 cm). (cdc.gov)
  • T he other muscles in the hand (such as the thenar eminence) are innervated by the median nerve. (neurologyneeds.com)
  • Evidence showing that in the retina and in the median eminence (including the pituitary stalk) dopamine may be the predominant catecholamine argues in favor of a specific function of the amine in these brain structures, although there are at present no direct findings to prove this suggestion. (aspetjournals.org)
  • OB = olfactory bulb, OC = optic chiasm, IF = infundibulum (and/or median eminence), CN V = cranial nerve V (trigeminal), CP = cerebral peduncle. (nih.gov)
  • Based on fresh cadaveric specimens, the longitudinal excursion of nerves is 15.5 mm in the median nerve and 14.8 mm in the ulnar nerve proximal to the carpal canal. (medscape.com)
  • [ 18 ] With elbow motion, excursion of the median nerve is 7.3 mm proximal and 4.8 mm distal to the elbow. (medscape.com)
  • Steroid injections can be administered for carpal tunnel syndrome, but beware of injecting into the median nerve in the centre of the wrist - always inject slightly towards the ulnar from the midline. (gponline.com)
  • Nerve injury (median and ulnar nerves) is uncommon and can be due to local swelling, entrapment, or traction during the reduction. (msdmanuals.com)
  • In clinical settings, some case reports suggest that associated median and ulnar neuropathies affect prognosis after nerve release. (cdc.gov)
  • The remaining muscles in the anterior forearm are innervated by the median nerve. (neurologyneeds.com)
  • At each side of the median line are two sets of tubercles and between these is the groove, pierced by the posterior sacral foramina, which are much smaller than the anterior,and transmit the posterior branches of the sacral nerves. (cloudaccess.net)
  • The median sulcus divides the floor in symmetrical halves. (neurosurgicalatlas.com)
  • The sulcus limitans runs laterally to the median sulcus, and the area between the two sulci is called the median eminence. (neurosurgicalatlas.com)
  • The median eminence contains rounded prominence related to the cranial nucleus of facial, hypoglossal, and vagal nerves. (neurosurgicalatlas.com)
  • Surprisingly, a subset of NGCs lacking nNOS arises from caudal ganglionic eminence (CGE) progenitors. (nyu.edu)
  • The precontrast T1-weighted magnetic resonance images did not demonstrate the characteristic bright spot of posterior pituitary within the sella, which was higher in position, in the region of the median eminence. (benthamscience.com)
  • For in vitro experiment, median eminence fragments from immature female rats were exposed to ETOH in a static incubation system, and prostaglandin-E, (PGE2) and LHRH were measured. (tamu.edu)
  • processes are generally sparse except in the external median eminence. (up.ac.za)
  • Moreover, lineage analyses, including loss-of-function experiments and inducible fate-mapping, indicated that nNOS + IvCs and NGCs are both derived from medial ganglionic eminence (MGE) progenitors under control of the transcription factor Nkx2-1. (nyu.edu)
  • Median™ features both durability and beauty in design. (daltile.com)