protosome
beard worm anatomy
Learn about this topic in these articles:
beard worms
- In beard worm: Form and function
…small anterior regions are called protosome and mesosome; the long trunk section is called the metasome. Each segment has its own coelom. The small protosome bears tentacles. The mesosome contains a structure known as a bridle, also called a frenulum, a pair of oblique cuticular ridges that extend backward to…
Read More