PARAPODIUM Meaning and
Definition
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A parapodium is a specialized appendage or limb found in certain marine invertebrates, particularly those belonging to the phylum Annelida, which includes segmented worms. These structures are characterized by their presence in pairs on each body segment, resembling paddle-like extensions or fleshy lobes. Parapodia usually arise from the sides of the body, just below the segmental grooves that separate each body segment.
Parapodia serve multiple functions in these organisms. Firstly, they play a crucial role in locomotion by providing the necessary support and muscular movement for the worm to crawl or swim. The parapodia aid in the wriggling motion of the animal, as the paddle-like extensions help generate enough propulsion through water or soil. Moreover, they act as respiratory organs, promoting gas exchange and ensuring sufficient oxygen supply for the organism's metabolic needs. Parapodia often possess numerous bristles or setae, which aid in maintaining traction, preventing the worm from slipping during movement.
In certain species, parapodia can also function as additional sensory organs, facilitating touch, chemoreception, or even photoreception. The presence, morphology, and modifications of parapodia vary significantly among different annelid groups, allowing adaptations to various ecological niches. Overall, the parapodium is a key anatomical feature in annelids, enabling them to navigate their environment successfully while providing sensory and respiratory functions that are crucial for their survival.
Common Misspellings for PARAPODIUM
- oarapodium
- larapodium
- -arapodium
- 0arapodium
- pzrapodium
- psrapodium
- pwrapodium
- pqrapodium
- paeapodium
- padapodium
- pafapodium
- patapodium
- pa5apodium
- pa4apodium
- parzpodium
- parspodium
- parwpodium
- parqpodium
- paraoodium
- pirapodium
Etymology of PARAPODIUM
The word "parapodium" is derived from two Greek roots: "para" meaning "beside" or "alongside", and "pous" meaning "foot". In biology, a parapodium refers to a paired locomotory appendage found in annelids, including polychaete worms. The term "parapodium" was coined to describe these structures, which are situated on both sides of the body and aid in movement or attachment.
Similar spelling word for PARAPODIUM
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