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| | CHAETOPODA - LoveToKnow Article on CHAETOPODA |
 | | These regions of the coelom end at the nds of the body and communicate with each other by means of a,ranched system of coelomic sinuses, which are in places very fine,ubes. | | | The condition is interesting as a persistence of the conditions obtaining in the provisional nephridia of e.g. | | | The ganglia are crowded at the posterior end of the body as in leeches, and there is much tendency to the obliteration of the coelom as in that group. |
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http://34.1911encyclopedia.org/C/CH/CHAETOPODA.htm
(13659 words)
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| | 16anim4 |
| | Because of the significance of the coelom, all triploblastic animals passed the Platyhelminthes, have some form of secondary body cavity. | | | For these and other reasons, as animals evolved, one of the most successful changes to occur, was the development of an additional body cavity, the coelom. | | | The `solid' body places pressure on organs during movement and prevents the formation of an efficient circulating system. |
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http://www.uwinnipeg.ca/~simmons/1116/16anim4.htm
(1027 words)
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| | CoelAdvanceCond |
| | The advanced coelomic condition is found in the following vertebrates: |
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http://www.sewanee.edu/biology/Berner/AnatomyQuiz/CoelomMesentary/CoelAdvanceCond.html
(10 words)
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| | American Zoologist: Are platyhelminthes coelomates without a coelom? An argument based on the evolution of Hox genes |
| | The theory is deeply linked to the concept of enterocoely, which means that the ancestral way in which the coelom forms in the embryo is by outpocketing of the gut wall, as is seen in most deuterostomes, some lophophorates and chaetognaths. | | | Many recent analysts recognize the fact that rhabditophoran flatworms share many traits with protostome coelomates (spiral cleavage, ciliated larva of the polyclads, tendency to ventral concentration of the nerve cords) and place the rhabditophorans at the base of the protostome branch. | | | Before challenging this dogma on molecular grounds, it is useful to expose two important historical concepts which have been in competition for explaining the origin of the bilaterians: the planuloid-acoeloid theory and the archecoelomate theory (reviewed in Willmer, 1990). |
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http://www.findarticles.com/p/articles/mi_qa3746/is_199812/ai_n8818711
(1412 words)
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| | Cranchiid Buoyancy |
| | The latter portion fuses with the VP coelom. | | | Second, the two major coeloms of the body have partially fused and increased in size. | | | These lobes are in broad contact medially and fuse to the mantle dorsally and the cephalic vein ventrally. |
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http://www.tolweb.org/notes/?note_id=835
(631 words)
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| | CoelPrimCond |
| | Animals that have the primitive coelomic condition are: | | | Chondrichthyes, Osteichthyes, Labyrinthodonts and Urodels (Agnatha have no coelom) | | | Chondrichthyes, Osteichthyes, Labyrinthodonts and Anurans (Agnatha have no coelom) |
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http://www.sewanee.edu/biology/Berner/AnatomyQuiz/CoelomMesentary/CoelPrimCond.html
(26 words)
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| | COELOM - LoveToKnow Article on COELOM |
| | The Cyclostomata have a pair of genital pores which lead from the coelom into the urino-genital sinus, and so to the exterior. | | | In human anatomy the body-cavity or coelom (Gr. | | | the Amphioxus the coelom is developed in the embryo as a series of bilateral pouches, called enterocoeles, from the sides of the alimentary canal; these are therefore entodermal in their origin, as in Sagitta and the Echinodermata among the invertebrates. |
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http://45.1911encyclopedia.org/C/CO/COELOM.htm
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| | UNSW Embryo - Coelomic Cavity (text only) |
| | The intraembryonic coelom communicated through coelomic portals (at the level of midgut herniation) with the extraembryonic coelom. | | | F3-7, G1: The gonads are also in part derivatives of the coelomic epithelium but they will be discussed with the rest of the genital system. | | | Describe the development of the intra- and extra-embryonic coeloms. |
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http://embryology.med.unsw.edu.au/Notes/coelomtxt.htm
(898 words)
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| | 325lab2 |
| | The coelom is defined as a fluid-filled body cavity that appears within mesoderm in the course of an embryo's development. | | | Some of the muscle fibres of the body wall are arranged transversely, making up a more distal layer of circular muscle. | | | Circular and longitudinal muscle, aciculum, dorsal cirrus, dorsal gill blade, notopodium, neuropodium, ventral cirrus, oblique muscles, ventral nerve cord, dorsal vessel, gut, chaetae, coelom. |
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http://www.erin.utoronto.ca/~w3bio325/325lab2.html
(3098 words)
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| | Lecture Invertebrates Part 2 |
| | The mesentery holds body organs within the coelom in place but allows growth and movement. | | | Their progressive, wavelike locomotion results from alternating contractions of circular and longitudinal muscles against a fluid filled, compartmentalized coelom. | | | One basic advantage for those organisms with a coelom is greater control over locomotion. |
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http://home.earthlink.net/~dayvdanls/AE_lecture2.htm
(1175 words)
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| | The Coelom & It’s Evolution |
| | This development also occurs in all non- coelomeates | | | May be connected by nerve cords running the length of the body | | | Coelom arises from a slit in the mesoderm. |
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http://sjcpl.lib.in.us/rhshomepage/bionotes/coelom.html
(692 words)
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| | Coelom Survival Advantages - Amazing Survival Guide |
| | if present, coelom) and, in many cases, the basic axes of body symmetry. | | | An incision was made through the skin and coelom just above the ventral...www.esajournals.org/... | | | of key concepts such as germ layers, coelom development and... |
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http://www.amazingsurvivalguide.com/coelom-survival-advantages.html
(729 words)
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| | Coelom |
| | The structure and development of the coelom is an important character for recognizing major groups of animals. | | | Fluid-filled cavity within the body of an animal; usually refers to a cavity lined with specialized tissue peritoneum in which the gut is suspended. |
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http://www.cartage.org.lb/en/themes/Reference/dictionary/Metazoan/C/Coelom.html
(41 words)
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| | Coeloms, a place for your stuff. |
| | As already indicated, it would be difficult to develop a true circulatory system if that system were not isolated from the actions of locomotory muscles. | | | Have you ever thought about the location and distribution of your internal organs? | | | This is a fluid-filled body cavity found in a number of different animal lineages. |
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http://science.kennesaw.edu/biophys/biodiversity/animalia/coelem.html
(495 words)
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| | Chapter 34: Animals: The Protostomes |
| | Coelom allows digestive system to move independent of body wall; internal organs can be complex. | | | Coelom is reduced in arthropods and forms the space about the reproductive system. | | | the tube-within-a-tube body plan, and a true coelom. |
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http://www.sirinet.net/~jgjohnso/apbio34.html
(2832 words)
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| | Body cavity - Wikipedia, the free encyclopedia |
| | The human body consists of the following cavities: | | | Alternatively, it is thought that the coelom may have evolved from gastric pouches ("stomachs" sort of) in cnidarians. | | | The coelom may be subdivided into "subcavities" such as the pericardial cavity around the heart. |
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http://en.wikipedia.org/wiki/Coelom
(384 words)
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| | Body cavity |
| | Alternatively it is thought that coelom may have evolved from gastric pouches sort of) in cnidarians. | | | The coelom may be subdivided into "subcavities" as the pericardial cavity around the heart. | | | In arthropods and mollusks the coelom is reduced in size the principal body cavity is part of blood circulation system called a haemocoel. |
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http://www.freeglossary.com/Coelom
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| | Lecture 8 |
| | If an organism had such a form of early embryology, then future changes in early developmental patterns might well make it look like either a protostome or a deuterostome, no matter what its actual affinities. | | | If it weren't for their embryology, we would be clueless as to their relationships with other phyla. | | | Formation of the coelom isn't much help, with the Chaetognaths because they lack a peritoneum, which technically makes them pseudocoelous. |
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http://nas.cl.uh.edu/novotny/amh08.htm
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| | [No title] |
| | A solution to both problems is to have some sort of body cavity, called a coelom, in which the body organs lie bathed in body fluid. | | | A true coelom is lined on all sides by mesoderm which gives rise to muscles that surround the gut as well as underlying the body wall. | | | Cleavage is indeterminate.This means that the fate of each individual cell is not determined when it is formed and each cell can form one of many cell types. |
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http://www.gwu.edu/~darwin/BiSc151/Coelom/MyCoelom.html
(640 words)
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| | Coeloms and Pseudocoeloms |
| | All these terms, and others explained below are to do with the nature of the body cavity of the animal. | | | Coelomate animals have a coelom, this is a body cavity that has a mesodermal lining. | | | The words used to define different body cavities relate to how the cavity comes into being during the development of the embryo as well as to its final observable structure. |
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http://www.earthlife.net/inverts/coelom.html
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| | Animal Phyla |
| | The pouches enlarge until they meet and fuse, forming an enterocoelom. | | | The coelom also develops differently in the two groups. | | | Phyla with a true coelom and digestive system are divided into two groups, the protostomes and the deuterostomes. |
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http://waynesword.palomar.edu/trnov01.htm
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| | Evolution & Science Discussion : Animals Without a Coelom (coelom = body cavity) |
| | Animals probably evolved from colonial flagellates (microscopic organisms who moved by the use of a flagellum, a whip-like structure- [think sperm].) | | | Coelomates, which include all other animals from annelids to vertebrates, have a true coelom which is completely lined with mesoderm. | | | Pseudocoelomates, which include nematodes and rotifers, have a false body cavity between the mesoderm and endoderm. |
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http://www.greatestjournal.com/community/_evolve_/4553.html
(505 words)
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| | NAME ___________________________ |
| | B. the serial repetition of similar body units each with their own coelom, nerves, ganglia, blood vessels, etc. | | | D. diffusion into the fluid of the coelom at the moist intestine. | | | D. The coelom distributes oxygen to the cells of the body. |
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http://www.csus.edu/indiv/r/reihmanm/b5e3exa1.htm
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| | Sipuncula Lecture |
| | Fig 9-8A Dorsal view of a typical sipunculan (Ruppert/Barnes. | | | Fig 15 One of many possible phylogenies of the Metazoa. | | | *similar to crinoids, phoronids, pterobraqnchs, and ancestral oligomerous coelomates |
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http://www.lander.edu/rsfox/310sipunculaLec.html
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| | Lecture Notes, Vert. Struc. Develop., Emporia State Univ. |
| | Remember how the spinal cord and notochord separate the mesoderm on each side? | | | The coelom is a body cavity that is different from other cavities in that it is lined with epithelium derived from mesoderm. | | | The heart is separated from the more posterior organs. |
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http://academic.emporia.edu/sievertl/verstruc/vsdweb4.htm
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| | animals.html |
| | coelom develops as outpocketing of mesoderm from endoderm | | | Why do you think the psuedocoelom considered to be ancestral to the "true" coelom? | | | What is the difference between pseudocoelomate and coelomate anatomy? |
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http://www.uvm.edu/~lehiggin/teaching/bio2C/animals.html
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| | Coelom |
| | *this is not as function of the vertebrate coelom | | | The vertebrate coelom forms by schizocoely (unlike that of other deuterostomes) | | | *the vertebrate coelom may have originally been a single undivided peritoneal cavity |
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http://www.lander.edu/RSfox/308coelomLec.html
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| | COELOM ::catalogue:: |
| | Words similar to coelom -ammocoete amphicoelous biocoenosis biocoenotic blastocoel cacoepy cacoethes coedit coedited coediting coedits coeducation coelacanth coelenterate coelenteron coeliac coelom coelostat coenacle coenobite |
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http://www.mainseek.com/coelom.html
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| | Animal - Open Encyclopedia |
| | The mesoderm and coelom do not form in the same way, but rather through evagination of the endoderm called enterocoelic pouching. | | | The mesoderm arises as in the flatworms, from a single cell, and then divides to form a mass on each side of the body. | | | Usually there is a hollow space around the gut, called the coelom, arising from a split within the mesoderm, or at least some reduced version thereof (eg a pseudocoelom, where the split occurs between the mesoderm and endoderm, common in microscopic forms). |
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http://open-encyclopedia.com/Animal
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| | Introductory Anatomy: Excretory & Reproductive Systems |
| | This is the case with the excretory and reproductive systems which are anatomically and evolutionary linked, and where parts of the excretory system have been taken over by the reproductive system. | | | The open plan coelom developed at about the same time as the circulatory system, and this became involved. | | | The dorsal aorta ran close to the nephrotome and formed a knot of capillaries, a glomerulus, associated with each nephrotome. |
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http://www.leeds.ac.uk/chb/lectures/anatomy9.html
(1325 words)
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| | Animal - Wikipedia, the free encyclopedia |
| | A number of parasites are included in this group, such as the flukes and tapeworms. | | | These groups have a reduced coelom, called a pseudocoelom. | | | There are exceptions to each of these characteristics, however - for instance adult echinoderms are radially symmetric, and certain parasitic worms have extremely simplified body structures. |
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http://en.wikipedia.org/wiki/Animal
(1889 words)
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| | Coelom |
| | However, as development continues and the coelom is subdivided, different names are given to this lining based on its location and what it covers. | | | How the coelom is further subdivided varies depending upon the taxa being considered. | | | The coelom is defined as a body cavity or space than runs the length of a vertebrate. |
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http://science.kennesaw.edu/~rmatson/coelom.html
(180 words)
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| | GLOSSARYC |
| | coelom In animals, a body cavity between the body wall and the | | | coelomates Animals that have a coelom or body cavity lined with |
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http://www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBookglossC.html
(2109 words)
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| | Search Results for coelom - Encyclopædia Britannica |
| | any animal in which the body cavity (coelom) arises in the embryonic stage as an outpocketing of the developing gut (enteron). | | | any member of a phylum of invertebrate animals that are characterized by the possession of a body cavity (or coelom), movable bristles (or setae), and a body divided into segments by transverse... | | | Nemertine worms are primitive marine animals that lack a coelom (body cavity) but differ from other acoelomates (animals that lack a coelom) by having a complete digestive tract. |
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http://www.britannica.com/search?query=coelom&submit=Find&source=MWTEXT
(310 words)
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| | [No title] |
| | A 3-dimensional understanding of this coelom relative to developing structures is the key to understanding embryonic flexion and body cavity formation. | | | Prior to subdivision, the coelom is regionally defined as pericardial coelom (That portion in the cardiogenic mesoderm; the "body" of the horseshoe), peritoneal coelom (distal portions of the left and right "legs" of the horseshoe), pericardio-peritoneal canal (portions of coelom linking the pericardial coelom- "body"- with peritoneal coelom-"the legs"). | | | During the 2nd month, the intraembryonic coelom will be subdivided into three body cavities pericardial, pleural, and peritoneal. |
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http://www.kumc.edu/research/medicine/pharmacology/CAI/webCAI/anatomy/em04.wbc
(1064 words)
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| | COELOM - Definition |
| | It is found in triploblastic animals called coelomates. |
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http://www.hyperdictionary.com/dictionary/coelom
(81 words)
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| | McGraw-Hill AccessScience: Coelom |
| | he coelom is the mesodermally lined body cavity of most animals above the flatworms and nonsegmented roundworms. |
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http://dx.doi.org/10.1036/1097-8542.146000
(85 words)
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| | [No title] |
| | Animals are multicellular heterotrophic eukaryotes, most of which use | | | A coelomate, is a triploblastic animal that has a body cavity | | | What is the difference between schizocoelous coelom formation and enterocoelous coelom |
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http://www.nmc.edu/~ftank/temp/sg29.html
(396 words)
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| | IngentaConnect Free-swimming Cellular Complexes in the Coelom of the Sipunculid ... |
| | It had been proposed that both types of coelomic cell complexes dissociated from extensive chloragogenic tissue clusters on the intestine surface of Th. | | | The variety of cell complexes in the coelom of other sipunculid is discussed. | | | The ultrastructural characteristics of coelomic cell complexes in the coelomic fluid were investigated with the use of transmission electron microscopy on the example of Japanese sipunculid. |
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http://www.ingentaconnect.com/content/maik/rumb/2003/00000029/00000003/00471609
(216 words)
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| | BIOLOGY 151 - GENERAL BIOLOGY I |
| | c) Can further sub÷ coelomates into categories based on how body cavity develops. | | | Acoelomate-Coelomate split (sub÷ of all triploblastic animals) Coelom = body cavity a) Acoelomates: i: Lack a vascular system ii: Lack a coelom (cavity b/ween gut and body wall). | | | (Sub÷ of coelomates) Based on 3 factors: Cleavage, blastopore fate, coelom formation. |
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http://www.usd.edu/biol/genbio/151/kurt/lectures/kd2.html
(824 words)
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| | Coelom Formation |
| | In the first, the coelom forms from outpocketings of the |
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http://tidepool.st.usm.edu/crswr/coelomformation.html
(62 words)
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| | Class Cephalopoda |
| | However, animals in this phylum are unique to coelomates in that they lack body segmentation. | | | Many also have a radula, a unique organ, mostly composed of chitin, in the mouth that allows the animal to scrape food from surfaces, especially the ocean floor, by sliding back and forth. | | | Mollusks have a coelom, but the coelom is made from cell masses, making all species in this phylum protosomes. |
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http://www.sidwell.edu/us/science/vlb5/Labs/Classification_Lab/Eukarya/Animalia/Mollusca/Cephalopoda
(251 words)
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| | IngentaConnect Ultrastructure of the Coelomocytes in the Tentacular Coelom of Th... |
| | Free-floating coelomocytes in the tentacular coelomic cavity of the sipunculan Thysanocardia nigra Ikeda, 1904, were studied using light interference contrast microscopy and scanning and transmission electron microscopy. | | | These two coeloms are completely separated in sipunculans. | | | No clusters of specialized cells that had been reported to occur in the trunk coelom of Th. |
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http://www.ingentaconnect.com/content/maik/rumb/2003/00000029/00000004/00474330
(203 words)
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| | Somites and Intraembryonic Coelum |
| | As the embryo is elongating, cavititations appear within the embryonic mesoderm that grow larger and eventually become continuous with the extraembryonic coelom to forming the intraembryonic coelom (see below). | | | This coelom will eventually form the pericardial, pleural, and peritoneal cavities. | | | Each somite will give rise to the axial skeleton at that level, plus its accompanying muscles and dermis. |
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http://cats.med.uvm.edu/cats_teachingmod/embryology/1_3/week_3/somites_coelom.html
(161 words)
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| | Glossary - Biognomen |
| | Having a coelom formed by the splitting of mesoderm. | | | Having a coelom formed from a mesodermal pouch off the primitive gut. | | | A flat-footed gait; the heel and toe both touch the ground. |
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http://webpages.charter.net/teefile/biognomen/glossary.html
(146 words)
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| | BIOLOGY 151 - GENERAL BIOLOGY I |
| | Coelomates Characteristics of coelomates: Body cavity present, completely lined by mesoderm Coelom functions: Cushions organ Allows independent organ growth and movement Hydrostatic skeleton 1. | | | Pseudocoelomates Characteristics of pseudocoels: lack a vascular system body cavity present, but not completely lined by mesodermal tissue Pseudocoel taxa: Rotifera (rotifers) Nematoda (round worms) C. | | | Acoelomates Characteristics of acoels: lack a vascular system lack a coelom (cavity between gut and body wall) Acoel taxa: Platyhelminthes Nemertea (ribbon worms) *unique eversible proboscis apparatus B. |
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http://www.usd.edu/biol/genbio/151/paula/pm3.html
(287 words)
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| | coelom.mollusk |
| | Recall that previous Bilateria did not have true coelom. | | | Williams) for information on how to fill this out, if you were not |
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http://www.sci.sdsu.edu/classes/biology/bio201/hanscom/coelom.mollusks.HTML
(225 words)
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| | Introduction to the Platyhelminthes |
| | Flukes, like other parasitic flatworms, have complex life cycles often involving two or more host organisms. | | | Life without a coelom : The image at left is a fluke (possibly a species of Probolitrema). | | | The lack of a cavity also constrains flatworms to be flat; they must respire by diffusion, and no cell can be too far from the outside, making a flattened shape necessary. |
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http://www.ucmp.berkeley.edu/platyhelminthes/platyhelminthes.html
(759 words)
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