A cavity that both digestive and circulatory serve are called cylindrical. This is the purpose of cnidarians.
A digestive chamber with one opening is called a gastrovascular cavity. This structure is typically found in simple organisms such as cnidarians and flatworms, where it serves both digestive and circulatory functions.
Extracellularly in a digestive cavity.
Both flukes and cnidarians possess a gastrovascular cavity for digestion. This cavity serves the purpose of digestion and distribution of nutrients throughout the organism's body.
A digestive tube, also known as a complete digestive system, is a continuous, one-way passage that extends from the mouth to the anus, allowing for the efficient processing of food. In contrast, a digestive cavity, or gastrovascular cavity, is a simpler structure found in organisms like cnidarians, where a single opening serves both as the entrance for food and the exit for waste, leading to a less efficient digestion process. Essentially, the digestive tube allows for a more complex and specialized digestion, while the digestive cavity is more rudimentary and less efficient.
Cnidarians do not have a true coelom (body cavity lined with mesoderm). Instead, they have a simple body plan with a central digestive cavity called the gastrovascular cavity. This cavity serves for both digestion and circulation of nutrients.
The hydra is a classic example. See link below for more information.
No, they are from the Phylum Porifera.
Acoelomates are animals that do not have a body cavity filled with fluid between the digestive tract and the body wall. Creatures like jellyfish (cnidarians) and flatworms (Platyhelminthes) are all acoelomates
gastrovascular cavity
gastrovascular cavity
In the phylum Cnidaria, such as jellyfish and sea anemones, the gastrovascular cavity functions as both a digestive and excretory system. Waste and excess materials are expelled through the mouth or diffused out of the cells lining the cavity. Cnidarians do not have specialized excretory organs like kidneys.
The gastroderm is the inner layer of cells that lines the gut or digestive cavity of cnidarians such as jellyfish and corals. It is involved in digestion, absorption of nutrients, and in some cases, defense mechanisms.