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∙ 8y agohydra
Many lower invertebrates lack a brain but do possess a central nervous system. These include jellyfish, starfish, and sponges.
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∙ 8y agoregulation study island...
An amoeba is considered a "single cell organism" and does not have a brain.
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.
Nervous system, respiratory system, and circulatory system lack nephridia.
No, the central nervous system consists of the brain and spinal cord. The somatic nervous system is a division of the peripheral nervous system that controls voluntary movements and receives sensory information.
Yes, they do have a nervous system.
segmented
nervous system
regulation study island...
The digestive, circulatory, muscular and nervous system.
amoeba
ventral nerve cord
An amoeba is considered a "single cell organism" and does not have a brain.
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.
It does not have a brain, the nervous system is scattered throughout it's body.
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.