Siphon .
sphinkter
muscular feet is the locomotory organ in mollusks
the type of respiratory organ mollusks have is GILLS.
No, a radula is not a foot. It is a tongue-like organ found in most mollusks, such as snails and slugs, that is used for feeding by scraping food particles. The foot of a mollusk is a muscular organ used for movement.
The scratchy tongue-like organ of many mollusks is the RADULA.
Mollusks exhibit greater complexity than roundworms in several key aspects, including their body structure and organ systems. Mollusks possess a more advanced and diverse body plan featuring a coelom, a muscular foot, and a mantle that can produce shells, whereas roundworms have a simpler pseudocoelomate structure. Additionally, mollusks often have specialized organ systems, such as a complex circulatory system and a nervous system with more developed sensory organs, enabling them to interact more effectively with their environment. This complexity allows mollusks to occupy a wider range of ecological niches compared to roundworms.
the main organ of the muscular system is the muscles
The main organ in the muscular system is the muscles.
nephridia
An organ.
The stomach is a large hollow muscular organ that can expand like a balloon. It serves as a storage and mixing chamber for food before it continues through the digestive system. The stomach's muscular walls contract and relax to help break down food and mix it with digestive juices.
I guess you mean the heart?