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| | Notochord - Wikipedia, the free encyclopedia |
 | | The notochord is a flexible, rod-shaped body found in embryos of all chordates. | | | This is the reason the embryos of vertebrates have them today; embryonic evolution often happens to follow a pattern similar to the ancestral development of the modern animal's traits. | | | Notochords were advantagous to primitive fish-ancestors because they were a rigid structure for muscle attachment, yet flexible enough to allow more movement than, for example, the exoskeleton of the dominant animals of that time. |
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http://en.wikipedia.org/wiki/Notochord
(519 words)
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| | Embryo: Notochord |
| | The notochord of the 20-somite embryo, Carnegie No. 2053 is separated from the digestive epithelium in many areas, particularly caudally where the dorsal aorta have fused medially between the two tissues. | | | The distance between the notochord and spinal cord and brain has otherwise increased and light and dark areas of sclerotomal material can be seen lateral to the notochord. | | | The 'arms' of the U then approach each other and a thin layer of digestive epithelium bridges the mouth. |
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http://www.ana.ed.ac.uk/anatomy/database/humat/notes/embryo/notochor.htm
(553 words)
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| | notochord - definition of notochord by the Free Online Dictionary, Thesaurus and Encyclopedia. |
| | A flexible rodlike structure that forms the main support of the body in the lowest chordates, such as the lancelet; a primitive backbone. | | | A similar structure in embryos of higher vertebrates, from which the spinal column develops. | | | 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. |
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http://www.thefreedictionary.com/notochord
(172 words)
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| | Chordata on Encyclopedia.com |
| | A high-affinity hemoglobin is expressed in the notochord of amphioxus, Branchiostoma californiense. | | | The meagerness of the skeleton is considered a degenerate, not a primitive condition. | | | The tail, notochord, and nerve cord degenerate, the pharynx enlarges, and the other organs shift in position; the incurrent and excurrent openings develop siphons. |
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http://www.encyclopedia.com/html/C/Chordata.asp
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| | GLOSSARY N |
| | The stiff rod-like structure that all members of the Phylum Chordata develop at some stage during their life. | | | notochord In chordates, a cellular rod that runs the length of the body and provides dorsal support. |
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http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookglossN.html
(861 words)
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| | Weill Cornell Physicians |
| | During chordate embryogenesis, the notochord plays a crucial role in patterning the central nervous system, axial muscles and gut. | | | Today, the most primitive living animals with a notochord are the urochordates, which are marine invertebrate chordates. | | | We study the evolutionary origins of the notochord and its flanking tissues in a urochordate, the ascidian Ciona intestinalis. |
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http://www.med.cornell.edu/research/and2015
(316 words)
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| | Tor70; notochord |
| | We have not investigated the nature of the antigen in Xenopus further. | | | Screens for antibody production should therefore be specific, e.g., on tissue to be analyzed such as frog notochord or the original | | | Tor 70 (Kushner, 1984) had previously been found to stain zebrafish notochord (P.D. Kushner and B. Mendelson, unpublished information). |
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http://www.xenbase.org/xmmr/Marker_pages/notochord/tor70noto.html
(426 words)
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| | VE Glossary |
| | Orienting response or reflex that encourages fetus to automatically turn its head toward a light source | | | Ectodermal thickening in amniotic sac floor; Forerunner of nervous system (spinal cord and brain) | | | Ectodermal tube formed by union of two neural folds; Dorsal midline structure induced by notochord that forms brain in cranial region and spinal cord in more caudal regions |
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http://www.visembryo.com/baby/gloss.html
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| | Notochord |
| | Notochords are flexible columns located between the gut and nerve cord in the embryos of all chordates (a group of animals that includes the vertebrates, or animals with backbones). |
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http://www.iscid.org/encyclopedia/Notochord
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| | TheFetus.net - Split notochord syndrome -Philippe Jeanty, MD, PhD |
| | TheFetus.net - Split notochord syndrome -Philippe Jeanty, MD, PhD | | | The terminal, dorsal part of the enteric fistula, which is produced between the endoderm and the ectoderm through a partially duplicated notochord in the development of the embryo, remains after obliteration of the fistula and, consequently, the mucosa of the enteric remnant is inverted and projects through the skin of the back | | | Depend on the form of the lesion (see below the associated anomalies), but abdomino-thoracic cysts, spina bifida and meningoceles are likely findings. |
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http://www.thefetus.net/page.php?id=443
(671 words)
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| | notochord |
| | notochord: a cartilaginous rod that runs along the back (dorsal) of all chordates at some point in their life cycle. |
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http://www.webref.org/anthropology/n/notochord.htm
(87 words)
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| | Notochord - EvoWiki |
| | The notochord is a longitudinal, flexible rod of cells that forms an incompressible structure spanning the length of the body beneath the dorsal nerve cord in chordates. | | | This page was last modified 21:49, 25 September 2004. |
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http://wiki.cotch.net/index.php?title=Notochord&redirect=no
(74 words)
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| | [No title] |
| | According to this model, the FP has an ectodermal origin. | | | It places the induction event (green arrow) at an early stage, before the notochord and FP have formed distinct structures. | | | Thus, significant variation exists in the molecular make-up of the FP, making it difficult to assign clear evolutionary homologies to the medial and lateral domains of FPs in different vertebrates. |
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http://nsm1.utdallas.edu/bio/Dmello/DEV-NEURO/Morphogenesis/LECTURE.doc
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| | notochord : Definition |
| | Search for notochord in these other databases too |
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http://www.everythingbio.com/glos/definition.php?ID=1943
(130 words)
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