Cleanup date July 2008 Image Root primordia.JPG thumb 250px right Root primordia brown spots as seen on the butt of a freshly cut pineapple crown intended for vegetative reproduction . A primordium plural primordia , in embryology , is defined as an organ or tissue in its earliest recognizable stage of development. ref http www.medterms.com script main art.asp?articlekey 33809 MedicineNet.com ref Cells of the primordium are called primordial cells A primordium can be considered the simplest set of initial conditions capable of triggering growth. Within any meristem are minute primordia that resemble knobby outgrowths or ribbed inverted cones. Primordium development in plants Primordial development in plants is critical to the proper positioning and development of plant organs. Different primordial types like the leaf and flower primordia arise from the shoot lateral meristem . The process is intricately regulated by a set of genes that affect the positioning, growth and Differentiation biology differentiation of the primordium. The plant hormone auxin has also been implicated in this process, with the new primordia being initiated at the placenta where the auxin concentration is the highest. Genes like STM shoot meristem less and CUC cup shaped cotyledon are involved in defining the borders of the newly formed primordium. ref http www.ncbi.nlm.nih.gov sites entrez?db pubmed&uid 16271866&cmd showdetailview&indexed google Heisler et al., Patterns of auxin transport and gene expression during primordial development revealed by live imaging of the Arabidopsis inflorescence meristem, Current Biology, 2005, Vol. 15, pp 1899 1911 ref References reflist See also Anlage biology Anlage Morphogenesis Category Plant morphology botany stub developmental biology stub es Primordio fa fr Primordium ... more details
Unreferenced stub auto yes date December 2009 In embryology , anlage is the primordium , the initial clustering of embryo nic cells that serves as a foundation from which a body part or an Organ anatomy organ develops. Failure to progress past this stage in organ development is known as agenesis . In genetics , anlage is often used synonymously with allele or gene . The genetic use of the term goes back to Gregor Mendel , who explained his observations on peas as being caused by Dominance relationship dominant and recessive Anlagen allele s . In psychoanalysis , anlage is a predisposition to a given Personality type personality characteristic or a trait. DEFAULTSORT Anlage Biology Category Developmental biology Developmental biology stub Genetics stub de Anlage Biologie ... more details
Orphan date February 2009 Parastichy, in phyllotaxy , is the invisible spiral line of the pattern of the areole s on some plants, such as cactuses and pinecones. ref cite book title Webster s Revised Unabridged Dictionary publisher C. & G. Merriam Co. date 1913 url http www.thefreedictionary.com Parastichy ref These spirals involve the insertion of a single primordium . ref name Weise cite web url http www.mi.sanu.ac.rs vismath dima index.html title Principle of Minimax and Rise Phyllotaxis last Weise first Dmitriy date 1998 10 29 accessdate 2008 12 14 ref See also Phyllotaxis Embryology References reflist Category plant morphology botany stub ... more details
unreferenced date May 2011 Infobox album See Wikipedia WikiProject Albums Name Universe Type Album Artist Dead Brain Cells Cover Universe89.jpg Released 1989 Recorded 1989 Genre Thrash metal Length Label Combat Records Producer Garth Richardson and DBC band D.B.C. Reviews Last album Dead Brain Cells album Dead Brain Cells br 1987 This album Universe br 1989 Next album Unreleased Dead Brain Cells album Unreleased br 2002 Universe is the second full length album from the group Dead Brain Cells released in 1989 on Combat Records . The album, a concept piece, tells of the creation of the universe, to the rise of man, ending with a possible future scenario. Track listing The Genesis Explosion Heliosphere Primordium Exit The Giants Rise Of Man Estuary Humanity s Child Phobos And Deimos Threshold Infinite Universe Category 1989 albums Category Dead Brain Cells albums Category Combat Records albums Category Concept albums 1980s metal album stub ... more details
class infobox style width 21em font size 90 text align left colspan 2 style text align center font size larger background color 001 Tortured Souls span style color f00 Tortured Souls span span style color ccc character span colspan 2 style text align center font size larger background color 001 color ccc Venal Anatomica Gender Male Race Cenobite Hellraiser Cenobite Family General Montefalco master Status Alive Venal Anatomica , a.k.a. The Hunter of Primordium , is a Character arts fictional character created by Clive Barker for the Tortured Souls toy line. He has nails hammered into his shoulder and leg and is at least nine feet tall. References reflist http www.spawn.com features torturedsouls venalanatomica.story.html http www.spawn.com features torturedsouls venalanatomica.html Tortured Souls Category Clive Barker characters Category Action figures Category Fictional mercenaries Fict char stub ... more details
Lateral roots extend horizontally from the primary root and serve to anchor the plant securely into the soil. This branching of roots also contributes to water uptake, and facilitates the extraction of nutrients required for the growth and development of the plant. Many different factors are involved in the formation of lateral roots. Regulation of root formation is tightly controlled by plant hormones such as auxin , and by the precise control of aspects of the cell cycle . Such control can be particularly useful increased auxin levels, which help to promote lateral root morphogenesis development , occur when young leaf primordia form and are able to synthesise the hormone. This allows coordination of root development with leaf development, enabling a balance between carbon and nitrogen metabolism to be established. Early Morphological Changes The following description is for early events in lateral root formation of the model organism Arabidopsis thaliana , where lateral roots typically form when the plant is between seven and nine days old. Stage I The first morphologically identifiable stage is the asymmetric division of two cells of the pericycle , termed pericycle founder cells, which are adjacent to the protoxylem poles and from which the lateral roots are derived entirely. These cells then undergo further division, causing radial expansion. Stage II The small, central cells then divide periclinally parallel to the surface of the plant body in a series of transverse, asymmetric divisions such that the young primordium becomes visible as a projection made up of an inner layer and an outer layer. Stages III and IV At the third stage, the outer layer of cells divide so that the primordium is now made of three layers. The fourth stage is then characterised by the inner layer undergoing a similar division, such that four cell layers are visible. Stages V to VIII Expansion and further division of these four layers eventually results in the emergence of the young la ... more details
saved book title Halo series subtitle The Complete Guide cover image Halo3LaunchInNYC ShaneKim MasterChief.jpg cover color Black Halo series The Complete Guide Overview Halo series Halo series Universe Characters of Halo Characters of Halo Arbiter Halo Arbiter Cortana Gravemind Master Chief Halo Master Chief Factions of Halo Factions of Halo Covenant Halo Covenant Flood Halo Flood Halo megastructure The Halo Array Slipstream science fiction Slipstream Video games Halo Combat Evolved Halo Halo 2 Halo 2 Halo 3 Halo 3 Halo Wars Halo Wars Halo 3 ODST Halo 3 ODST Halo Reach Halo Reach Halo Anniversary Halo Anniversary Halo 4 Halo 4 Music Halo Original Soundtrack Halo OST Halo 2 Original Soundtrack Halo 2 OST Halo 3 Original Soundtrack Halo 3 OST Novels Halo The Fall of Reach The Fall of Reach Halo The Flood The Flood Halo First Strike First Strike Halo Ghosts of Onyx Ghosts of Onyx Halo Contact Harvest Contact Harvest Halo The Cole Protocol The Cole Protocol Halo Evolutions Evolutions Halo Cryptum Cryptum Halo Glasslands Glasslands Halo Primordium Primordium Machinima The Codex The Codex Fire Team Charlie Fire Team Charlie The Heretic video game The Heretic Red vs. Blue Red vs. Blue This Spartan Life This Spartan Life Development Bungie Ensemble Studios 343 Industries Martin O Donnell Michael Salvatori Related articles List of Halo media List of Halo media Halo board game Halo board game Halo actionclix Halo ActionClix Halo Effect book Halo Effect The Halo Graphic Novel The Halo Graphic Novel Halo Legends Halo Legends Halo Uprising Halo Uprising Halo Helljumper Halo Helljumper Halo Blood Line Halo Blood Line Halo Fall of Reach Halo Fall of Reach I Love Bees I Love Bees The Life advertisement The Life Halo 3 marketing Halo 3 marketing Halo.Bungie.Org ... more details
Infobox Embryology Name PAGENAME Latin cavitas amniotica GraySubject 12 GrayPage 56 Image Gray31.png Caption Model of human embryo 1.3 mm. long. Image2 Caption2 System CarnegieStage 5a Days Precursor GivesRiseTo MeshName MeshNumber Code Terminologia Embryologica TE E6.0.1.1.5.0.8 The amniotic cavity is the closed sac between the embryo and the amnion, containing the amniotic fluid. The amniotic cavity is formed by the fusion of the parts of the amniotic fold, which first makes its appearance at the cephalic extremity, and subsequently at the caudal end and sides of the embryo . As the amniotic fold rises and fuses over the dorsal aspect of the embryo, the amniotic cavity is formed. Formation of the Amniotic Cavity At the beginning of the second week, a cavity appears within the inner cell mass and when it enlarges it becomes the Amniotic cavity. The floor of the amniotic cavity is formed by the epiblast. Epiblast migrates between the epiblastic disc and trophoblast. In this way the epiblastic cells migrate between the embryoblast and trophoblast . The floor is formed by the epiblast which later on transforms to ectoderm while the remaining cells which are present between the embryoblast and trophoblast are called amnioblasts flattened Cells . These cells are also derived from epiblast which is transformed into ectoderm. The amniotic cavity is surrounded by a membrane, called the amnion. As the implantation of the blastocyst progresses, a small space appears in the embryoblast, which is the primordium of the amniotic cavity. Soon amniogenic Amnion forming cells amnioblasts separate from the epiblast and line the amnion, which encloses the amniotic cavity. The epiblast forms the floor of the amniotic cavity and is continuous peripherally with the amnion. The hypoblast forms the roof of the exocoelomic cavity and is continuous with the thin exocoelomic membrane. This membrane along with hypoblast forms the primary yolk sac. The embryonic disc now lies between the amnio ... more details
Infobox Anatomy Name Seminal colliculus Latin colliculus seminalis GraySubject 256 GrayPage 1234 Image Gray1153.png Caption Vesicul seminales and ampull of ductus deferentes, seen from the front. Image2 Gray1142.png Caption2 The male urethra laid open on its anterior upper surface. System MeshName MeshNumber DorlandsPre c 61 DorlandsSuf 12265795 The seminal colliculus Latin colliculus seminalis , or verumontanum , of the prostatic urethra is a landmark near the entrance of the seminal vesicle s. Verumontanum is translated from Latin to mean mountain ridge , a reference to the distinctive median elevation of urothelium that characterizes the landmark on magnified views. Embryo logically, it is derived from the uterovaginal primordium . The landmark is important in classification of several urethra l developmental disorders. The margins of seminal colliculus are the following the orifices of the prostatic utricle the slit like openings of the ejaculatory duct s. the openings of the prostatic ducts Pathology The verumontanum is an important anatomic landmark for pathology in a congenital anomaly known as posterior urethral valve s, in which there is a developmental obstruction of the urethra in newborn male infants. ref cite web url http emedicine.medscape.com article 412226 title Posterior Urethral Valve. Emedicine, Radiology. accessdate July 18, 2010 date July 18, 2010 publisher eMedicine ref Urethral carcinoid tumors have been reported at the verumontanum. ref Maxwell Smith , M Scott Lucia , Priya N Werahera and Francisco G La Rosa Carcinoid tumor of the verumontanum colliculus seminalis of the prostatic urethra with a coexisting prostatic adenocarcinoma a case report Journal of Medical Case Reports 2010, 4 16 ref The structure tends to migrate caudal ly, or downward, in hypospadia disorders and is then seen in the bulbous, or penile portion of the urethra. ref F Ikoma, H Shima. 1991. Caudal migration of the verumontanum. Journal of Pediatric Surgery. 26 7, 858 86 ... more details
embryos. The pronephric primordium develops from the intermediate mesoderm , lying between the paraxial ... duct . While this transient primordium never forms functional nephrons, the duct derived from it is essential ... more details
Pioneer neuron is a cell that is a derivative of preplate in the early stages of corticogenesis of the brain. Pioneer neurons settle in the marginal zone of the cortex and project to sub cortical levels. In the rat, pioneer neurons are only present in prenatal brains. Unlike Cajal Retzius cell s, these neurons are Reelin Reln negative. Pioneer neurons are born in the ventricular neuroepithelium all over the cortical primordium . In the rat cortex, they appear at embryonic day E 11.5 in the lateral aspect of the telencephalic vesicle and cover its whole surface on E12. These cells, which show intense immunoreactivity for calbindin and calretinin , are characterized by their large size and axonal projection. They remain in the marginal zone after the formation of the cortical plate they project first into the ventricular zone, and then into the subplate and the internal capsule . Therefore, these cells are the origin of the earliest efferent pathway of the developing cortex. Function It is thought that axons of pioneer neurons serve as a pathway for additional neurons that develop later in the embryo and project their axons to the appropriate target. In many systems pioneer neurons are eliminated by programmed cell death and are not present in the adult. See also Neural development Pioneer axon External links cite journal author Meyer G, Soria JM, Mart nez Gal n JR, Mart n Clemente B, Fair n A title Different origins and developmental histories of transient neurons in the marginal zone of the fetal and neonatal rat cortex journal J. Comp. Neurol. volume 397 issue 4 pages 493 518 year 1998 month August pmid 9699912 doi 10.1002 SICI 1096 9861 19980810 397 4 493 AID CNE4 3.0.CO 2 X http www.uth.tmc.edu scriptorium gallery kelly i9 2.html Neuronal Migration and Formation of Cellular Patterns During Brain Development from the site of the University of Texas. cite journal author Meyer G, Goffinet AM, Fair n A title What is a Cajal Retzius cell? A reassessment of a classical ... more details
File Pelvicdigit1.jpg thumb 350px Radiograph showing a pelvic digit A pelvic digit , pelvic finger , or pelvic rib is a rare congenital abnormality in humans, in which Osseous tissue bone tissue develops in the soft tissue near the human pelvis pelvis , resembling a rib or finger and often divided into one or more segments with Articulation anatomy pseudo articulations . Pelvic digits are typically benign tumor benign and a symptom atic, and are usually discovered accidentally. Approximately 40 cases have been reported. ref name breu cite journal last Van Breuseghem first I. title The pelvic digit a harmless eleventh finger journal British Journal of Radiology volume 79 issue 945 pages 106 107 date 2006 url http bjr.birjournals.org cgi content full 79 945 e106 doi 10.1259 bjr 17378249 accessdate 2009 06 14 pmid 16940362 ref The pelvic digit was first reported by Sullivan and Cornwell in 1974. ref cite journal last Pandey first Vivek authorlink coauthors Ajay Singh Thakur, Kiran K.V. Acharya, P. Sripathi Rao title The pelvic digit eleventh finger journal Indian Journal of Orthopaedics volume 43 issue 1 pages 97 98 date 2009 url http www.ijoonline.com article.asp?issn 0019 5413 year 2009 volume 43 issue 1 spage 97 epage 98 aulast Pandey issn 1998 3727 accessdate 2009 06 14 pmid 19753190 doi 10.4103 0019 5413.45332 pmc 2739487 ref Pelvic digits may be located at any level of the pelvis, the lower ribs, or even the anterior abdominal wall. It is theorized that pelvic digit anomalies arise during the mesenchymal stage of bone growth, within the first six weeks of embryogenesis . Their formation may result from a failure of the primordium of the coccyx to fuse to the vertebral column , leading to the independent development of a proto rib structure. ref name breu References references External links http radiology.uthscsa.edu CME ELTXT MA pelvic1.htm Radiographs of a pelvic digit http www.springerlink.com content t123382w71649212 Case report 32 in Skeletal Radiology full ... more details
Tortured Souls is a novelette written by Clive Barker , and included with the Tortured Souls series of figurine collectible figures he designed with Todd McFarlane in 2001. Each chapter was included separately with the series 1 figures. Clive Barker designed a second series of these figures in 2002, and they were also released by Todd McFarlane. The story was broken into six parts, each corresponding with the figure it was packaged with. The order is as follows Book 1 Agonistes The Secret Face of Genesis Book 2 Scythe Meister The Assassin Transformed Book 3 Lucidique The Avenger Book 4 Talisac The Surgeon of the Sacred Heart Book 5 Venal Anatomica The Hunter of Primordium Book 6 Mongroid The Second Coming Characters Agonistes The first named character introduced, Agonistes is a mysterious manipulator of flesh. It is he that turned Krieger and Lucidique into monsters. Zarles Krieger Scythe Meister main Scythe Meister Lucidique Daughter of a senator, after witnessing his death she shows Zarles Krieger where Agonistes resides. Shortly after Scythe Meister killed the emperor, Krieger s former boss sent his sons to capture and interrogate Lucidique about Scythe Meister. Lucidique was murdered in the desert, but Agonistes turned her into a monster. Soon thereafter, she killed her murderer and went back home to find The Scythe Meister and falls in love with him. She witnesses his death at the hands of Venal Anatomica, and in retribution blinds Venal Anatomica, leaving him to wander helpless through Primodium. Dr. Talisac main Talisac Venal Anatomica A nine foot tall monster made of rotten flesh, Venal Anatomica was one of Dr. Talisac s failures. Montefalco wished it to be completed in order to get rid of the two monsters The Scythe Meaister Lucidique , which were haunting Primodium. Strong and apparently immune to pain, Venal Anatomica succeeded in killing The Scythe Meister, but was overcome by Lucidique, who blinded him. Venal then spent the rest of his life eating bodie ... more details
Jade Books are described in several scriptures of the Taoist canon Daoist canon as existent primordially in the various divine Heavens these Jade Books are variously said to be instrumental in creating and maintaining the divine structure of the universe, or as regulating national or personal destiny. In the Vacuous Grotto heavens Cavern primordium , before the separation of heaven and earth, there existed, in the primaeval darkness, the 5 Ancients Jade Chapters . ref Raz 2004, p. 393 ref The titles of these are Spirit generating perfection treasuring stanzas of the Cavern of Profundity Heaven penetrating Southern Clouds Treasure Numinous Writ Numinous book of the Nine Heavens of Cavernous Moisture of the Treasure Kalpa Subtle chapter of the Bright Cavern of Golden Perfection Treasured Bright writ of the perfection generating Primordial Spirit In Highest Clarity heaven are the Jade Tablets of the Wisdom Manuscript parts of these reveal the inner names of the 10,000 spirits. ref Eichman 1999, p. 269 ref Compare the esoteric Shin gon list of 10,000 Buddha s. In the Azure palace in Highest Clarity heaven are jade tablets registering the names and the nomenclatures of those adepts who are destined to ascend to the asterisms in broad daylight. ref Eichman 1999, p. 323 ref Heavenly books composed of other semi precious stones In Sumerian lore, Nisaba continually gets advice from a tablet of lapis lazuli. ... Nisaba consults a lapis tablet for advice about the star chart mul an ... . The subject in our text is also consulting the star chart from a tablet made of a precious stone gi nu11 gal . ref Dijk & Geller, p. 62 ref This subject is P ta Foundling , the demonic scribe. ref Dijk & Geller, p. 61 ref In Muslim mystical lore, the archangel Israf il is owner of a jewelled tablet of fate . ref R. O. Winstedt Shaman Saiva and Sufi . Constable & Co. Ltd., London, 1925. p. 30 http www.sacred texts.com sha sss sss04.htm e ref The Tablet of Destiny was made out of an immense w ... more details
A gonophore is a reproductive organ in Hydrozoa that produces gamete s. It is a sporosac , a medusa or any intermediate stage. The name is derived from the Greek words gone that which produces seed and phoreus bearer . Gonophores are borne on branching stalks that grow out as a ring from the hydranth i.e. the hydroid polyp, bearing a mouth, digestive cavity and tentacles wall. The germ cells are formed from the inner layer of the entocodon . The entocodon is the primordium i.e. the first cells that give rise to the development of an organ of the subumbrella i.e. the concave oral surface of a medusa in the development of medusae from the gonophore. ref cite journal doi 10.1002 jmor.1050830103 last Liu first C.K. coauthors N.J. Berrill title Gonophore formation and germ cell origin in Tubularia journal Journal of Morphology year 2005 month February volume 83 issue 1 pages 39 59 url http www3.interscience.wiley.com journal 109915671 abstract accessdate 2010 07 25 pmid 18873163 ref The gonophores in the order Leptomedusae are borne on much reduced hydranths and are usually protected in a periderm al i.e. belonging to a hydroid perisarc gonotheca. Medusae forming on fully developed hydranths are extremely rare usually the gonophores develop into medusae or into sessile sporosacs. The gonophores in the superfamily Plumularioidea are usually fixed sporosacs i.e. gonophores held in place and not released into the water during larval development , more rarely they are rather reduced medusoids. The gonophores in the family Lovenellidae are Peduncle anatomy pedunculate free roaming medusae. The gonophores in the family Haleciidae are typically sporosacs, growing singly or bunched into a glomulus . They remain attached to the hydroids or break off to be passively drifted away in a few, the gonophores are naked. The gonophores in the family Sphaerocorynidae are borne singly or on short, branching blastostyles i.e. the living axial portion of a modified gonangium , from which num ... more details
at the same time within the primordium , and hypha e originating from the stem form a cover over the developing ... in the first, the primordium is established that contains all the structures of the mature fruit ... hyphae that covers the entire primordium. The structures of the stem and the cap develop simultaneously ... more details
Cleanup date November 2011 repetition date November 2011 infobox Book See Wikipedia WikiProject Novels or Wikipedia WikiProject Books name Halo Cryptum title orig translator image File Halo Cryptum book cover.jpg 220px image caption author Greg Bear cover artist country United States language English series Halo genre Science fiction novel Science fiction publisher Tor Books Tor release date January 4, 2011 ref cite web url http us.macmillan.com Book.aspx?isbn 9780765323965 title Halo Cryptum work Tor Books accessdate 2011 08 14 ref media type Print Hardcover pages 352 preceded by Halo Evolutions Evolutions followed by Halo Primordium Primordium isbn ISBN 978 0 7653 2396 5 oclc Halo Cryptum is a science fiction novel by Greg Bear , set in the Halo series Halo universe . ref cite web url http halo.xbox.com en us news headline exclusive book excerpt halo cryptum 11819 title Exclusive Book Excerpt Halo Cryptum publisher xbox.com accessdate October 29, 2011 ref The book released on January 4, 2011, ref name cryptum out cite web url http www.eurogamer.net articles 2011 01 05 halo cryptum novel out now title halo cryptum novel out now accessdate October 29, 2011 ref and is the eighth Halo novel, following 2009 s Halo Evolutions , an anthology written by various writers creating short stories. Set approximately 100,000 years before the events of Halo Combat Evolved , the novel tells the story of the Forerunners Halo Forerunners rule over the galaxy. ref name cryptum out cite web accessdate October 29, 2011 ref The novel is focused on the Forerunner youngster Bornstellar Makes Eternal Lasting and his adventure to Earth Erde Tyrene and beyond. ref name 343 Industries Press Release cite web author Halo Waypoint date 2011 10 08 url http halo.xbox.com en US news headline science fiction legend greg bear set to explore the time of the forerunners 5011 title Science Fiction Legend Greg Bear Set to Explore the Time of the Forerunners publisher Halo Waypoint accessdate 2011 08 14 r ... more details
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