2024年12月26日 · Annelid, any member of a phylum of invertebrate animals that are characterized by the possession of a body cavity (or coelom), movable bristles (or setae), and …

2024年12月26日 · Setae, embedded in the body wall, may be simple, S-shaped, forked, or hairlike. Except for the first, each segment may have either two pairs of S-shaped setae or a …

The setae ("hairs") of annelids project out from the epidermis to provide traction and other capabilities. The simplest are unjointed and form paired bundles near the top and bottom of …

Annelid setae are stiff bristles present on the body. They help, for example, earthworms to attach to the surface and prevent backsliding during peristaltic motion. These hairs make it difficult to …

2022年9月9日 · Setae, also known as parapodia or suckers, are paired structures present in Annelida for ease of locomotion. The annelids are bilaterally symmetrical, coelomates, …

2024年12月27日 · Annelids are triploblastic and possess a true coelom, which is divided by septa, and a closed circulatory system. They have a complete digestive system, a well-developed …

All annelids other than leeches have setae. Setae are bristles found on either side of each metamere segment. In earthworms, setae are small and used for helping the worm move …

2024年1月9日 · The main difference between setae and parapodia is that setae are movable bristles in annelids, whereas parapodia are fleshy outgrowths on each segment of the annelid. …

Annelid setae are small, bristle-like structures found on each segment of an annelid's body. They are made of a tough protein called chitin. The primary function of setae is to help the annelid …

Chaetae are bristle-like structures that are primarily found in annelids, such as earthworms. They are used for locomotion, providing traction and grip on surfaces. On the other hand, setae are …