Parachordals

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August undefined, 2024

Webnoun : either of a pair of cartilaginous rods that develop on each side of the notochord beneath the posterior part of the embryonic brain and participate in formation of the parachordal plate Dictionary Entries Near parachordal paracholera parachordal parachordal plate See More Nearby Entries Cite this Entry Style “Parachordal.” Webparachordals parachordoma parachroma parachromatic parachromatin parachromatism parachromatopsia Parachromis parachronism parachordalis. Definition in the dictionary …

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WebTwo initial bar-shaped and paired chondrifications flank the notochord, the rostral trabecles and the caudal parachordals. In most reptiles, there is an additional component, the transverse ... WebWhat are Parachordals? Cartilaginous rods that develop on either side of rostral end of notochord. polar cartilages. MAY lie between parachordals in some verts -part of chondrocranium. Postcranial skeleton. The bones of the body, excluding those of the head. splanchnocranium tn ranji trophy team

parachordals - Wiktionary

Webparachordal — 1. adjective Alongside the notochord in the embryonic skull 2. noun Such a bar of cartilage that will form the base of the skull … Wiktionary parachordal — para·chordal … English syllables WebElongate cartilages that form part of the chondrocranium from condensations of head mesenchyme next to the notochord. The trabeculae is the anterior pair, while the parachordals are the posterior pair. The polar cartilages lie in between the trabeculae and parachordals, and the occipitals lie posterior to the parachordals. WebJun 1, 2024 · The space in-between the parachordals is filled with a thin layer of cells, which never chondrify. The anterior tips of the parachordals later fuse with the posterior edge of the acrochordal, which ultimately delimitates, as … tn ranji trophy captain

Prochordal definition of prochordal by Medical dictionary

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Web4 REPTILES AND BIRDS skin of birds and reptiles is virtually devoid of glands from ZOO 4690L at Florida Atlantic University WebThey are a pair of olfactory capsules around the organs of smell, a pair of optic capsules around the eyes, and a pair of auditory or otic capsules around the auditory organs (internal ears). The parachordals grow larger and fuse in the middle line forming a basilar plate leaving a small opening or basicranial fenestra. tn rapWebpar·a·chor·dal ( par'ă-kōr'dăl) Denoting a position alongside the rostral portion of the notochord in the embryo; designating the bilateral cartilaginous bars that enter into the … tn ratio\u0027s

"WebA quadrate cartilage supporting a lower moveable jaw, formed by the union of two cartilages in the middle line, and bearing dorsally two, possibly three processes; an anterior one, parallel to its fellow, and not united with it, but with the ethmoid plate, so that a moveable upper jaw did not exist; a middle one articulating with the trabeculæ, … " - Parachordals

Parachordals

Web(A) Paired trabeculae consist of single rows of chondrocytes. (B,C) These elongate (B) and fuse posteriorly (C) to the parachordals. (D) Lateral view, 56 hpf, showing the ventral position of trabeculae (dotted line). (E) In syu mutants, the first ANC cartilages (dotted lines) are shorter and closer to the notochord (arrowhead). (F) Trabeculae ... WebThe basitrabecular is a derivative of the polar cartilages at the intersection of the trabeculars and the parachordals. From this version of autodiastyly it is straightforward to derive both holo- and hyostyly, as well as other variations on those themes.

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Webparachordals (a pair of cartilages on the floor of the developing chondrocranium) trabeculae (a pair of cartilages of the floor just ROSTRAL to parachordals) occipital arch (single cartilage just CAUDAL to parachordals, forms back wall of chondrocranium) - contains an opening callen foramen magnum through which brain and spinal cord pass sense … Webcrania and cleft palate (asterisk). D: pdgfra;pdgfrb double mutants lose the palatal skeleton (arrowheads) and a region of the parachordals adja-cent to the posterior basicapsular commissure (arrows). E: Bar chart depicting neurocranial length measured from the anterior ethmoid plate to the posterior occipital arch of the neurocranium.

Webparachordal. Alongside the anterior portion of the notochord in the embryo; designating the bilateral cartilaginous bars that enter into the formation of the base of the skull. [ para - + … Weba. 1. (Anat.) Situated on either side of the notochord; - applied especially to the cartilaginous rudiments of the skull on each side of the anterior part of the notochord.

Webparachordal ( not comparable ) Alongside the notochord in the embryonic skull. Noun [ edit] parachordal ( plural parachordals ) Such a bar of cartilage that will form the base of the skull. WebThe parachordals are the first part of the chondrocranium to appear. A small quantity ofinter cellular matrix becomes visible between the cells surrounding the notochord and …

WebJun 8, 2024 · The parachordals show their most advanced chondrification in the area of the otic capsules. The portions, which have a contact with the notochord, are also cartilaginous, but the marginal areas still consist of some undifferentiated cells. These anterior portions of the parachordals show a strong cartilaginous fusion with the acrochordal, where ...

Web2. Noun. (British pharmaceutical drug countable) A ''paracetamol'' tablet. ¹. ¹ Source: wiktionary.com. Medical Definition of Paracetamol. 1. The generic name for a common … tn rat snake imagesWebIt breaks down into: Hyomandibulae (sing. hyomandibula) - upper elements that articulate with the braincase Ceratohyals - lower elements that support Meckel's cartilages Basihyal - ventral mid-line element. Note: These … tn rat snakeWebparachordals English [ edit] Noun [ edit] parachordals plural of parachordal This page was last edited on 15 October 2024, at 09:03. Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. tn rat\u0027sWebSep 11, 2024 · The parachordals are anteriorly fused to the acrochordal. or crista sellaris, which ossifies as the ... tn rattlesnake\u0027snoun : either of a pair of cartilaginous rods that develop on each side of the notochord beneath the posterior part of the embryonic brain and participate in formation of the parachordal plate Dictionary Entries Near parachordal paracholera parachordal parachordal plate See More Nearby Entries Cite this Entry Style “Parachordal.” tn rat snakesWebMar 22, 2024 · The mesoderm, on the other hand, differentiates into the posterior part of the neurocranium, which develops as a pair of cartilaginous rod-like structures, the parachordals. The latter continues posteriorly into the occipital cartilage, which will differentiate into the basioccipital, exoccipital, and supraoccipital elements. tn raoWebJan 1, 2009 · The results show that mesenchymatous rudiments of parachordals, acrochordal cartilage and trabecula cranii are the first to appear in the chondrocranium of Lacerta agilis. The parachordals are... tn rc\u0026d