segmented
nervous system
The digestive, circulatory, muscular and nervous system.
regulation study island...
ventral nerve cord
The nerve cord in an earthworm performs the same task as the nervous system of any animal. The function of the nervous system is to bring sensory information to the brain, where it is processed. Then, the brain sends signals to the body via the nervous system and those signals cause the animal to move.
The similarities between the earthworm and human nervous system is that they are carbon based. The difference is that the humans nervous system is skeletal while that of the earthworm is not.
earthworms have a closed circulatory system
The earthworm doesn't have a brain per see, but its nervous system features a brain like pair of cerebral ganglia which is located above and in front of the pharynx.
Earthworms do have a brain.
Reproductive System, Nervous System, Digestive System, Circulatory System Doesn't it also include the Excretory system, the Muscular System, and Endocrine system?
hydraMany lower invertebrates lack a brain but do possess a central nervous system. These include jellyfish, starfish, and sponges.
Bilaterally symmetric animals have a central nervous system.