I believe it's septa
seta
Typhlosole.
The organ in an earthworm that grinds up food is called the gizzard. It is a muscular structure that helps break down food particles before they enter the intestine for digestion.
Usually it is called the ileocecal valve. It separates the small intestine from the large intestine.
You can use a program called GParted to add, edit, and delete partitions.
i believe it is called hatchling.
Prostomium is the frontmost part of the earthworm. This is not called a true segment as it doesn't contain typical organs of an annelida. Peristomium is from where the true segment of the earthworm body starts.
The gall bladder.
An earthworm is not a filter feeder. Marine animals that feed by passing nutrient-rich water through their gills are called filter feeders because their gills filter nutrients from the water and pass them into their intestines. An earthworm does not have gills and does not normally live in water. The earthworm's digestive system consists of a pharynx, esophagus, crop (food receptacle), gizzard (used for grinding swallowed earth), and a long, straight intestine.
earthworm moves by the hair like projections called setae .
The first segment on an earthworm is called the prostomium. It is a fleshy lobe that covers the mouth and helps the earthworm sense its environment.
The small intestine