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| | [No title] |
 | | Ventral to the fenestra ovalis, the prootic and otooccipital are in contact again, forming, respectively, the anterior and posterior margins of the cavum cochleare. | | | The paroccipital process forms the posterior portion of the lateral braincase and the ventral margin of the post-temporal fenestra. | | | This lamina of membrane bone (sensu Rieppel 1993) is not as well developed in S. |
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http://palaeo-electronica.org/2005_1/bever4/descrip.htm
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| | [No title] |
| | Postorbital bar parallels the quadrate, with the infratemporal fenestra rectangular in shape (0), jugal and postorbital approach or contact the quadratojugal to constrict the infratemporal fenestra (1). | | | Postorbital in lateral view: has a straight frontal process (0), frontal process curves rostrodorsally, and the dorsal border of the temporal bar is dorsally concave (1). | | | Jugal and postorbital contribute equally to postorbital bar (0) or ascending process of jugal reduced and descending process of postorbital ventrally elongate (1). |
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http://www.ucpress.edu/books/pages/2601001/Dino6.1OrnithoDesc.doc
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| | Ultradarwinian: The Braincase of Syntarsus rhodesiensis: Not so Birdy After All |
| | A protrusion of bone from the caudal margin of the prootic was interpreted by Whetstone as the remnant of an “interfenestral” bridge subdividing the fenestra ovalis dorsally from the fenestra pseudorotunda ventrally. | | | Ventral to the cochlear fenestra is the “vagus” foramen, remnant of the metotic foramen in more primitive archosaurs. | | | Under this interpretation the process extending ventrally from the ventral lip of this articulatory facet is an extension of the paroccipital process forming the caudal wall of the otic cavity. |
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http://ultradarwinian.gnxp.com/archives/002968.html
(1545 words)
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| | Estes, R., 1961 |
| | A distinct channel connecting fenestra ovalis with jugular foramen is undoubtedly a fenestra rotunda. | | | 3A) shows the position and relationships of the fenestra ovalis, cochlea, and fenestra rotunda. | | | The fenestra ovalis is separated from the "unossified region" by an anterior process of the opisthotic. |
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http://www.ucmp.berkeley.edu/synapsids/rowe/estes.html
(4321 words)
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| | Stapes - Wikipedia, the free encyclopedia |
| | It is the smallest bone in the human body. | | | In non-mammalian vertebrates, the bone homologous to the stapes is usually called the columella; however, in reptiles, either term may be used. | | | The stapes or stirrup is the stirrup-shaped small bone or ossicle in the middle ear which attaches the incus to the fenestra ovalis, the "oval window" which is adjacent to the vestibule of the inner ear. |
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http://en.wikipedia.org/wiki/Stapes
(109 words)
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| | Palaeos Vertebrates: Glossary F-G |
| | Fenestra rotunda: the round window in the inner ear which relieves pressure in the inner ear. | | | Fenestra exonaria: the external nares, the "nostril." Thus, the anterior nares in non-choanates is the fenestra exonaria anterior. | | | Fenestra pseudorotunda: a structure in reptiles functionally analogous to the fenestra rotunda of mammals, i.e. |
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http://www.palaeos.com/Vertebrates/Lists/Glossary/GlossaryFG.html
(2443 words)
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| | The Protoavis controversy - EvoWiki |
| | protractor pterygoidei et quadrati, with associated confluence of the orbits with the temporal fenestrae, thus facilitating prokinesis. | | | The post-crania are as badly preserved, or worse, than the cranial elements, and their interpretation by Chatterjee (esp. in Chatterjee 1997) are in many cases unsubstantiated or speculative. | | | Chatterjee omits in his 1997 account of the braincase, the presence of a substantial post-temporal fenestra, which in all Aves (including the urvogel), is reduced or absent altogether (Currie 1995, Paul 2002), and the lack of a pneumatic sinus on the paroccipital (Currie 1995). |
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http://www.evowiki.org/index.php/The_Protoavis_controversy
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| | fenestra ovalis - definition of fenestra ovalis by the Free Online Dictionary, Thesaurus and Encyclopedia. |
| | This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. | | | fenestra - a small membrane-covered opening (especially one in the bone between the middle and inner ear) | | | fenestra ovalis - fenestra that has the base of the stapes attached to it |
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http://www.thefreedictionary.com/fenestra+ovalis
(106 words)
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| | Fenestra ovalis - Wikipedia, the free encyclopedia |
| | The fenestra ovalis or oval window is a membrane-covered opening which leads from the middle ear to the vestibule of the inner ear. | | | Vibrations arriving at the eardrum are transmitted via the interacting ossicles from the middle ear through the membrane of the fenestra ovalis to the inner ear. | | | This page was last modified 01:08, 5 October 2005. |
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http://en.wikipedia.org/wiki/Fenestra_ovalis
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| | Gray, Henry. 1918. Anatomy of the Human Body. Page 1040 |
| | It is placed at the bottom of a funnel-shaped depression and, in the macerated bone, leads into the cochlea of the internal ear; in the fresh state it is closed by a membrane, the secondary tympanic membrane, which is concave toward the tympanic cavity, convex toward the cochlea. | | | The fenestra cochleæ (fenestra rotunda) is situated below and a little behind the fenestra vestibuli, from which it is separated by a rounded elevation, the promontory. | | | The fenestra vestibuli (fenestra ovalis) is a reniform opening leading from the tympanic cavity into the vestibule of the internal ear; its long diameter is horizontal, and its convex border is upward. |
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http://www.bartleby.com/107/pages/page1040.html
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| | EAR - LoveToKnow Article on EAR |
| | The long process of the incus runs downward and ends in a little knob called the os orbiculare, which is jointed on to the stapes or stirrup bone (fig. | | | The inner wall shows a promontory caused by the cochlea and grooved by the tympanic plexus of nerves; above and behind it is the fenestra ovalis, while below and behind the fenestra rotunda is seen, closed by a membrane. | | | It will thus be seen that the stapes lies nearly at right angles to the long process of the incus. |
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http://www.87.1911encyclopedia.org/E/EA/EAR.htm
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| | Earliest known tetrapod braincase and the evolution of the stapes and fenestra ovalis |
| | As in other tetrapods, the stapedial footplate of Acan-thostega fitted into the fenestra ovalis, but instead of being free to vibrate as part of an ear, was firmly held there, forming a major component of the braincase wall. | | | A specialized auditory fenestra ovalis may have evolved more than once among tetrapods. | | | The fenestra ovalis is shown to be derived directly from the vestibular fontanelle |
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http://www.nature.com/nature/journal/v369/n6479/abs/369392a0.html
(450 words)
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| | Ohr/ear |
| | These vibrations are transmitted through the three small bones (ossicles) of the middle ear to the fenestra ovalis, which leads to the inner ear. | | | Sound waves are transmitted through the auditory meatus and cause the eardrum (tympanic membrane) to vibrate. | | | A duct (the Eustachian tube) connects the middle ear to the back of the throat (pharynx), enabling the release of pressure that builds up in the middle ear. |
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http://www.lichtensteiger.de/ohr.html
(313 words)
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| | Ossicles |
| | The malleus then transmits the vibrations, via the incus, to the stapes, and so ultimately to the membrane of the fenestra ovalis, the opening to the vestibule of the inner ear. | | | The stapes articulates with the incus and is attached to the membrane of the fenestra ovalis, the elliptical or oval window or opening between the middle ear and the vestibule of the inner ear. | | | The ossicles give the eardrum mechanical advantage; the resulting vibrations would be much smaller if the sound waves were transmitted directly from the outer ear to the oval window. |
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http://www.worldhistory.com/wiki/O/Ossicles.htm
(354 words)
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| | fenestra ovalis |
| | fenestra that has the base of the stapes attached to it | | | Add the dictionary search box to your site! |
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http://www.english-dictionary.us/meaning/fenestra_ovalis.asp
(19 words)
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| | Untitled Document |
| | These include the development of a broad frontoparietal skull table that forms a shelf overhanging the supratemporal fenestra, the reorientation of the metotic fissure and fenestra ovalis onto the occiput, the ventral extension of the supraoccipital on either side of the foramen magnum, a broad but low occipital condyle, and pneumatization of the basioccipital. | | | Its remains include a well-preserved braincase that displays a suite of derived characters unique to the animal, and others that help establish its relationships amongst the Theropoda. |
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http://www.vertpaleo.org/jvp/22-802-811.html
(179 words)
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| | fenestra: Information From Answers.com |
| | fenestra rotunda, fenestra cochleae, round window, fenestra of the cochlea — fenestra leading into the cochlea | | | fenestra ovalis, fenestra vestibuli, oval window, fenestra of the vestibule — fenestra that has the base of the stapes attached to it |
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http://www.answers.com/topic/fenestra-1
(103 words)
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| | FENESTRA OVALIS Meaning and Definition - Dictionary - eLook.org |
| | FENESTRA OVALIS Meaning and Definition - Dictionary - eLook.org | | | [noun] fenestra that has the base of the stapes attached to it | | | Synonyms: fenestra vestibuli, oval window, fenestra of the vestibule |
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http://www.elook.org/dictionary/fenestra-ovalis.html
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| | MSN Encarta - Dictionary - fenestra |
| | either of two cavities fenestra rotunda, fenestra ovalis inside the ear | | | Click here to search all of MSN Encarta | | | Search for "fenestra" in all of MSN Encarta |
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http://encarta.msn.com/dictionary_1861610975_1861610975/nextpage.html
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