earthworm

nine structures

pharynx

anterior muscular structure that helps in sucking food into the digestive tract.

esophagus

a narrow tube that transports food from the pharynx to the crop.

crop

a storage organ that holds food temporarily before it passes to the intestine.

intestine

the main site for digestion and absorption of nutrients in the digestive tract.

cerebral ganglion

a simple brain which is located above pharynx and is connected to the first ventral ganglion the removal of which would result in uncontrolled movement of the worm

ventral nerve cord

a long, thin, white structure that runs the length of the body, located on the belly side. It acts as a central communication pathway, connecting the brain (cerebral ganglia) to the rest of the body.

segmental ganglia

epineurium