Peristomium.
The central nerve cord in an earthworm is located on the ventral side of its body, running along the underside. It is part of the earthworm's nervous system and helps in coordinating movement and responses to stimuli.
The earthworms digestive system is increased in complexity because of the earthworm's segmentation. On each stop or segmentation there is a sphincter and its own digestion going on.
Bowman's capsule surrounds the glomerulus and is the first segment of the renal tubules in the kidney. It helps in filtering blood and capturing the filtrate produced by the glomerulus.
Calciferous glands in earthworms help to regulate the calcium carbonate levels in their body. These glands secrete calcium carbonate to aid in the formation of the earthworm's protective and hard outer cuticle. This helps in maintaining the structural integrity of the earthworm's body.
Quality analysist
Segments
Dead earthworm.
Segment 21 .
it doesnt
earthworm
not what those guys said
Yes, the setae on an earthworm segment are usually arranged in pairs, with each pair located on opposite sides of the segment. These setae help the earthworm grip the soil and aid in movement.
The female genital pores in an earthworm are located on segment 14. These pores are used for receiving sperm during reproduction.
2
It is long, narrow and cylindrical in shape. It has no eyes or ears.Mouth is present on the first segment and anus at the last segment. The mouth is over hung by a flap called prostorium.
they are squished
Except for the first and last segments, which have no setae, there are eight tiny bristle-like structures that can not be seen with the naked eye called setae on each segment of an earthworm. The arrangement of the setae is one factor that helps in the identification of earthworms, as they can be closely or widely paired in four pairs or separate. Setae grip the soil to help the earthworm move about and sense the enviroment.