Search results
Results from the WOW.Com Content Network
The gastrovascular cavity is the primary organ of digestion and circulation in two major animal phyla: the Coelenterates or cnidarians (including jellyfish and corals) and Platyhelminthes (flatworms). The cavity may be extensively branched into a system of canals.
Intracellular digestion can also refer to the process in which animals that lack a digestive tract bring food items into the cell for the purposes of digestion for nutritional needs. This kind of intracellular digestion occurs in many unicellular protozoans, in Pycnogonida , in some molluscs , Cnidaria and Porifera .
a Beroe ovata, b unidentified cydippid, c "Tortugas red" cydippid, d Bathocyroe fosteri, e Mnemiopsis leidyi, and f Ocyropsis sp. [17]. Among animal phyla, the ctenophores are more complex than sponges, about as complex as cnidarians (jellyfish, sea anemones, etc.), and less complex than bilaterians (which include almost all other animals).
Digestion is both intracellular and extracellular. Respiration and excretion are accomplished by simple diffusion. A nerve net is spread throughout the body. Many Cnidaria exhibit polymorphism, wherein different types of individuals are present in a colony for different functions. These individuals are called zooids. These animals generally ...
Cross section of jellyfish. The gastrodermis is numbered 3. Gastrodermis (from Ancient Greek: γαστήρ, gastḗr, "stomach"; δέρμα, dérma, "skin") is the inner layer of cells that serves as a lining membrane of the gastrovascular cavity in cnidarians. [1]
It has a quadratic dome that has a diameter of 4 to 11 mm. Narcomedusae have four tentacles that leave the umbrella near the level of the stomach. They have a stomach that is broad and circular and do not have a pouch. These jellyfish have tentacles that are solid that curve upwards into the mesoglea above the stomach. [7]
It also helps promote good digestion, preventing excess gas. Manage gas: Excess gas stuck in your GI tract can lead to bloating. To avoid this, ...
This regression from medusa to polyp has only been observed with the presence of differentiated cells from the outer umbrella and part of the animals digestion system. [6] The ability of transdifferentiation , a non-stem cell which can morph into a different type of cell, in these cells is pivotal for this species' changing life cycle.