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Topic: Gastrovascular cavity

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	NationMaster - Encyclopedia: Gastrovascular
		Gastrovascular cavities, as the name suggests, function in both digestion and the transport of nutrients to all parts of the body.
		Therefore a digestive cavity with a single opening that functions as both mouth and anus is called a gastrovascular cavity.
		Gastrovascular cavity, as the name indicates, functions in both digestion and the transport of nutrients to all parts of an animal body.
	www.nationmaster.com /encyclopedia/Gastrovascular (277 words)

	Cnidaria - Encyclopedia Jr, free information reference for Kids
		The basic body shape of a cnidarian consists of a sac with a gastrovascular cavity, with a single opening that functions as both mouth and anus.
		The ectoderm surrounds the cnidarian's 'stomach', or gastrovascular cavity which functions as both mouth and anus; it is used both to ingest food and excrete waste.
		The gastrovascular system plays a role in the digestion and dispersion of food and the removal of metabolic waste: it surrounds the gastrovacular cavity as well as its extensions in the tentacles of polyps.
	www.encyclopediajr.com /wikiarticle/c/n/i/cnidaria.php (2656 words)

	BioG 105/106 \| Autotutorial Introductory Biology
		A digestive cavity of this sort, with a single opening that functions as both mouth and anus, is called a gastrovascular cavity.
		Indigestible remains of the food are expelled from the gastrovascular cavity via the mouth.
		The root hairs of plants were one example, and the gastrovascular cavity of the planaria is another.
	instruct1.cit.cornell.edu /courses/biog105/pages/demos/105/unit6/gastrovascularcavity.4b.html (918 words)

	Hydra
		The gut of cnidarians has only one opening and is termed the gastrovascular cavity.
		Both column and tentacles are highly contractile and, by expelling gastrovascular fluid from the mouth, a hydra can shrink to a fraction of its previous volume.
		The major stimulant for this response is the common tri-peptide (a chain of 3 amino acids), glutathione.
	www.northern.edu /natsource/INVERT1/Hydra1.htm (1991 words)

	MerckMedicus : Dorland's Medical Dictionary
		characterized by the presence of a cavity or cavities.
		fibrotic cavities cavities of the lung composed of granulation tissue surrounded by scar tissue, as in idiopathic pulmonary fibrosis or tuberculosis; in tuberculosis they may be the source from which the disease spreads to other pulmonary segments.
		(ka´vo-sər”fis) the surface of a cavity, as of a tooth.
	www.merckmedicus.com /pp/us/hcp/thcp_dorlands_content.jsp?pg=/ppdocs/us/common/dorlands/dorland/dmd_c_16.htm (2190 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal
		Gastro vascular cavity, as the name indicates, functions in both digestion and gas exchange.
		The radially symmetrical cnidarians have a sac-like body in two distinct layers, the epidermis and gastrodermis, with a jellylike layer called the mesoglea between.
		This cavity has only one opening to the outside and, in most cnidarians, that is surrounded by tentacles which serve to capture prey.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=gastrovascular_cavity (105 words)

	Digestive System \| Macmillan Animal Sciences
		One of the first steps toward a complex digestive system in animals, and the processing of larger prey, is the evolution of a gastrovascular cavity, a digestive sac with a single opening to the external environment.
		The gastrovascular cavity serves as a protected space for extracellular digestion inside the animal, and at the same time allows distribution of the digested material to most cells of the body.
		However, the effectiveness of a gastrovascular cavity in supplying the animal with nutrients is limited.
	www.bookrags.com /research/digestive-system-ansc-02 (1232 words)

	gastrovascular cavity - HighBeam Encyclopedia
		gastrovascular cavity A body cavity that has elaborated into a highly branched canal system with digestive and circulatory functions (e.g.
		Gastrovascular circulation in an octocoral: evidence of significant transport of coral and symbiont cells.
		Gastrovascular flow and colony development in two colonial hydroids.
	www.encyclopedia.com /doc/1O8-gastrovascularcavity.html (316 words)

	Gastrovascular cavity at AllExperts
		Gastrovascular cavity, as the name indicates, functions in both digestion and the transport of nutrients to all parts of an animal body.
		Organisms belonging to two major phyla, the Cnidaria and the Platyhelminthes, possess gastrovascular cavities.
		This cavity has only one opening to the outside and that is surrounded by tentacles in most cnidarians.
	en.allexperts.com /e/g/ga/gastrovascular_cavity.htm (157 words)

	Cnidaria, Laboratory Notes for BIO 1003
		There are no blood vessels to distribute nutrients from digestion, and the gastrovascular cavity extends out into each of the tentacles.
		Also note the two cell layers—ecoderm and endoderm— with mesoglea between them and the empty gastrovascular cavity in the center of the cross section.
		Radial canals extend from the gastrovascular cavity to a ring canal in the margin of the bell.
	faculty.baruch.cuny.edu /jwahlert/bio1003/cnidaria.html (870 words)

	Animal Diversity (Site not responding. Last check: )
		They are the simplest of all the animals, and have only three basic types of cells: epithelial cells, that protect the sponge; collar cells, that process food; and amoebacytes, that carry food from the collar cells to the epithelial cells.
		Flatworms are acoelomate: they have a gastrovascular cavity that is surrounded with muscle tissue, but they have no cavity outside the gastrovascular cavity.
		They do have an internal body cavity that surrounds their digestive tract, but the digestive tract is not lined with muscle tissue derived from the mesoderm layer of the embryo.
	sciweb.henryford.cc.mi.us /Biology/jacobs/bio131/animaldiversity/Animal_Diversity.html (521 words)

	Module 13: Invertebrates
		Phylum Cnidaria: Cnidarians have radial symmetry, a gastrovascular cavity, and cnidocytes
		Like cnidarians and ctenophores, flatworms have a gastrovascular cavity with only one opening (and tapeworms lack a digestive system entirely and absorb nutrients across their body surface).
		The mantle cavity of a bivalve contains gills that are used for feeding and gas exchange.
	faculty.valencia.cc.fl.us /glindbeck/BSC1011C/33Invertebrates.htm (7188 words)

	CLASS ANTHOZOA (Site not responding. Last check: )
		Anthozoa lack a medusa stage and have complex polyps, with a large gastrovascular cavity partially subdivided by numerous mesenteries and a pharynx (stomodaeum).
		In colonial octocorals there are masses of gastrovascular canals (solenia) that extend from the central gastrovascular cavity, permeate the coenenchyme, and allow direct food sharing among zooids.
		The gastrovascular cavity permeats the colony, and includes the large cavity running through the axis of the primary zooid.
	www.flmnh.ufl.edu /malacology/IZ2005/LabNotes/lab4.htm (4530 words)

	Animals
		A gastrovascular cavity is a digestive compartment with a single opening, the mouth.
		A body cavity is a fluid-containing space between the digestive tract and the body wall.
		A pseudocoelom is a body cavity that is in direct contact with the wall of the digestive tract.
	www.lavc.cc.ca.us /kovnatgd/TEC/Lectures/Bio3/animals.htm (1697 words)

	Oceanlink \| marine sciences education and fun
		The gut is the gastrovascular cavity, which is used for internal digestion.
		The mussel is now inside the anemones' gastrovascular cavity, and internal digestion is occurring.
		The tentacles are bringing the zoopankton into the anemones' gastrovascular cavity.
	oceanlink.island.net /oinfo/biodiversity/Cnidaria/Anemones.html (512 words)

	Invertebrate Hearts
		In this system a body wall of about only two cells thick encloses a central gastrovascular cavity, which serves the dual functions of digestion and distribution of substances throughout the body.
		The fluid inside the cavity is continuous with the water outside through a single opening; thus both inner and outer layers of tissue are bathed by fluids.
		In this system, the cells closest to the cavity have direct access to the nutrients, but the nutrients are able to diffuse a short distance to cells further away.
	members.fortunecity.de /hogarth_scholar/Gastrovascular.html (423 words)

	Simple skins- Hydra
		All the higher groups of animals have a separate gut cavity and the body cavity.
		Then the cavity in which ink is filled is comparable to the gut cavity (enteron) and outside the refill but inside the main body whatever space exists is comparable to the coelom.
		Beneath the skin is a spacious cavity, coelenteron also known as gastrovascular cavity, in which digestion of food takes place.
	www.suite101.com /article.cfm/our_beautiful_bodies/86806 (394 words)

	[No title]
		Acoelomate - no body cavity, just a gastrovascular tube running through the body Pseudocoelomate - a fluid filled body cavity surrounding the gastrovascular tube that houses the organs Celomate - a bounded body cavity separated from the gastrovascular tube and mesoderm by a peritoneum.
		A pharynx for ingestion, esophagus for transport, a crop for storage, a gizzard for maceration, and intestines for absorption.
		This specialization along the gastrovascular cavity was possible because of a complete digestive tract with one way movement.
	www.fiu.edu /~pitzert/lab8.htm (885 words)

	Cnidaria
		-This cavity serves for digestion, the exchange of respiratory gases and metabolic wastes, and for discharge of gametes.
		The mouth of an anthozoan leads to a pharynx, which is an invagination of the body wall that leads into the gastrovascular cavity.
		The gastrovascular cavity is divided into sections by mesenteries that bear cnidocytes and gonads on their free edges.
	www.snow.edu /~allans/biology1320/cnidaria.html (737 words)

	Page Title (Site not responding. Last check: )
		found only in the gastrodermis, these cells are responsible for (1) pulling water into the gastrovascular cavity by means of the cilia these cells possess, (2) absorpting food materials from the lumen of the gastrovascular cavity and (3) providing some muscular contraction within the gastrodermis.
		found only in the gastrodermis, these cells secrete digestive enzymes into the lumen of the gastrovascular cavity and, thus, are responsible for the initiation of extracellular digestion.
		- the gastrovascular cavity is partitioned by septa, thus increasing the surface area of the cavity that has extensive cnidocytes as part of the gastrodermis
	people.eku.edu /rameyb/page18.html (930 words)

	Coral Anatomy and Physiology
		Glandular cells: The glandular cells secrete digestive enzymes into the cavity in the center of the tube-like polyp.
		This cavity is a very primitive stomach, and is called the "gastrovascular cavity." The digestive enzymes break down the food that the organism eats into smaller pieces.
		For this reason, they are known as "nutritive muscular cells." The food is then further digested inside the cells and broken down into components the cells can use to grow and function.
	www.peteducation.com /article.cfm?cls=16&cat=1927&articleid=2987 (1558 words)

	Anemonie web page
		During feeding, the beat of the cilia along the gullet wall is reversed in order to aid in moving food particles into the gastrovascular cavity.
		The gastrovascular cavity is divided into sections by tissue called septa.
		Ostia are round openings that allow circulation of fluid between adjacent sections of the gastrovascular cavity.
	www1.broward.edu /~ssimpson/anemone.htm (607 words)

	Circulatory System
		this cavity supplies nutrients for all body sells lining the cavity, obtains oxygen from the water in the cavity, and releases carbon dioxide and other wastes into it.
		The gastrovascular cavity of flatworm, such as the planarian is more complex than that of Hydra.
		Most of these animals are small, and adequate transport is accomplished by the movements of the body against the coelomic fluids, which are in direct contact with the internal tissues and organs.
	www.snow.edu /~allans/biology1320/circulatorysystem.html (1366 words)

	Cnidaria
		The basic body plan of the cnidarians is a sac-like structure, with an internal cavity called the gastrovascular cavity.
		The gastrovascular cavity has a single opening which serves as both mouth and anus, which is often surrounded by tentacles.
		The body wall has an external cell layer, the epidermis; an internal cell layer, the gastrodermis that lines the gastrovascular cavity; and a layer between the other two, called the mesoglea which may be either cellular, or more often, a cellular.
	www.esu.edu /~milewski/intro_biol_two/lab_9_porifera_cnidaria/Cnidaria.html (771 words)

	Coral Anatomy and Physiology
		Glandular cells: The glandular cells secrete digestive enzymes into the cavity in the center of the tube-like polyp.
		This cavity is a very primitive stomach, and is called the "gastrovascular cavity." The digestive enzymes break down the food that the organism eats into smaller pieces.
		The nutritive muscular cells also have flagella on them that help to mix the food inside of the gastrovascular cavity.
	peteducation.com /article.cfm?cls=16&cat=1927&articleid=2987 (1558 words)

	Gastrointestinal tract Summary
		Waste products may be re-packaged into little bags, and passed back out through the membrane(interestingly enough, this type of digestion is used by the immune system's white blood cells in mammals; white blood cells protect the body from infection by engulfing and digesting foreign invaders such as viruses and bacteria).
		Sponges, for example, carry water into this cavity, where any tiny food particles are extracted and distributed throughout the cells of the sponge for digestion.
		Because this type of digestion occurs within the cavity of the gut, and not within a cell, it is referred to as extracellular digestion.
	www.bookrags.com /Gastrointestinal_tract (6522 words)

	Digestive
		Water is drawn in through pores in the body wall of a sponge and into the central cavity.
		As the water passes from the central cavity out of the osculum at the top of the sponge it must pass over the collar cells which line the central cavity.
		This means that nutrients enter, and wastes leave, the gastrovascular cavity through the same opening.
	www.pc.cc.va.us /Tureman-intro/biology/Animals/digestiv.htm (367 words)

	Planaria 2
		Two branches of the extensive gastrovascular cavity can also be seen.
		This cavity is lined with large, vacuolated cells that comprise the gastrodermis.
		Lacking a body cavity, the space between the gut and epidermis in these acoelomates is filled with a meshwork of mesodermal parenchyma as well as muscle fibers that run circularly, longitudinally and diagonally.
	bioweb.uwlax.edu /zoolab/Table_of_Contents/Lab-4b/Planaria_2/planaria_2.htm (168 words)

	[No title]
		Gastrovascular cavity = Four gastric pouches with gastric filaments - radial canals - ring canals
		Oral disc with tentacles - pharynx - gastrovascular cavity with septa (mesenteries) - increase surface area of cavity
		Calcareous cups - for protection; exoskeleton; living corals form sheet of tissue over exoskeleton so all polyps are connected.
	www.csuchico.edu /~dw53/lecture%206%20radiates%20outline.htm (206 words)

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