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What do flukes have in common with the cnidarians when it comes to digestion?
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.
Which structure is also known as the tear sac?
lacrimal canal no no it's lacrimal sac
What is the outer layer of the paricardial sac called?
The sac consists of two layers, the parietal (outer) and visceral (inner) layer
Is Lacrimal Sac always full of Tears?
No, the lacrimal sac is not always full of tears. It mainly serves as a reservoir for tears produced by the lacrimal glands and helps in draining tears into the nasal cavity. The amount of tears in the lacrimal sac can vary depending on factors like emotional responses or eye irritation.
What is the accumulation of fluid in a sac like cavity especially the testes?
The accumulation of fluid in a sac-like cavity, particularly in the testes, is known as a hydrocele. This condition occurs when fluid collects in the tunica vaginalis, the protective sheath surrounding the testes. Hydroceles can be congenital or acquired, often resulting from injury, infection, or inflammation. While typically painless and harmless, they may require treatment if they cause discomfort or swelling.
How does the shape of the digestive sac of opithorchis compare with that of dugesia?
The digestive sac of Opisthorchis, a genus of trematodes (flukes), is typically more complex and branched compared to that of Dugesia, a genus of freshwater planarians. Opisthorchis has a more developed and specialized digestive system suited for its parasitic lifestyle, featuring a bifurcated intestine that enhances nutrient absorption from its host. In contrast, Dugesia has a simpler, less branched gastrovascular cavity that reflects its free-living, predatory nature. Overall, the structural differences reflect their distinct modes of life and feeding strategies.
One difference between a gastrovascular cavity and a complete digestive tract?
A gastrovascular cavity is a digestive sac with only a single opening. A complete digestive tract (otherwise known as an Alimentary canal) has two openings (a mouth and anus) between its digestive tubes unlike the gastrovascular cavity in which food is ingested and eliminated through the same opening (example would be hydra)
The sac like gut or gastrovascular cavity of cnidarians has?
A) Only one opening: they expel undigested material through the mouth.
Do a acoelomate have a simple sac like gut cavity?
Acoelomates, such as flatworms, do not have a true gut cavity; instead, they possess a gastrovascular cavity that functions in both digestion and nutrient distribution. This cavity is more sac-like compared to the complete digestive systems found in coelomates, but it has a single opening that serves as both mouth and anus. Overall, the digestive system in acoelomates is simpler and less specialized than in organisms with coelomic cavities.
The digestive sac of a jellyfish has openings?
The digestive sac of a jellyfish, known as the gastrovascular cavity, has a single opening that serves as both the mouth and the anus. This cavity is responsible for digestion and nutrient absorption, allowing the jellyfish to break down food and expel waste through the same opening. The simple design is effective for their feeding strategy, which primarily involves capturing small prey using their tentacles.
What do flukes have in common with the cnidarians when it comes to digestion?
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.
What are three characteristics that all have in common?
All cnidarians live in water, have tentacles with specialized stinging cells called nematocysts, and have an internal sac for digestion which is called the gastrovascular cavity.
Where is a fish's mouth?
A jellyfish takes food in through its mouth which is located on the underside if its bell. Food is digested in a sac-like structure called a coelenteron or gastrovascular cavity. Waste material is passed out through the mouth.
What type of respiratory system does Phylum Cnidaria have?
There are no respiratory organs, and both cell layers absorb oxygen from and expel carbon dioxide into the surrounding water. When the water in the digestive cavity becomes stale it must be replaced, and nutrients that have not been absorbed will be expelled with it.
What is a sac body plan?
A sac body plan is a simple body organization found in some animals, where the body consists of a central cavity surrounded by a single layer of cells. This cavity acts as a digestive chamber where food is taken in and digested. Examples of animals with a sac body plan include cnidarians like jellyfish and sea anemones.
What is the respiratory cavity?
Air sac
What are three characteristics that all cnidarians have in common?
All cnidarians live in water, have tentacles with specialized stinging cells called nematocysts, and have an internal sac for digestion which is called the gastrovascular cavity.
