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Can sea stars feel pain?
Highly unlikely. Sea stars don't have a central nervous system.
What is the central nervous system of a sea star used for?
Starfish, or sea stars, lack a brain and central nervous system. They do have a nervous system that can sense things like orientation, touch, temperature and light.
Where can you find a picture of a sea stars nervous system?
There are many illustrations on google images.
Do sea otters have a nervous system?
No
How are cephalopod nervous systems unique among mollusks?
Well what I know about this question is that..............Cephalopods nervous system is like this all echinoderms have a simple nervous system similar to that of a jellyfish. Around the mouth is a circle of nerve fibers called the nerve ring. In sea stars, a radial nerveruns from the nerve ring to the tip of each arm.The radial nerves control the movements of the sea star's arms.One characteristic that is unique to echinoderms is the water vascular system. The water vascular system is a system of canals filled with fluid. It uses water pumps to help the animal move, eat, breathe, and sense its environment.The water vascular system of a sea star. Notice how water pressure from the system is used for many functions.
Do all starfish have the same amount of arms?
Starfishes, or sea stars, are members of the do-all-starfishes-or-sea-stars-have-five-armsAsteroidea. Their bodies consist of a central disk from which radiate from five to more than twenty arms or rays
How is a starfish body more complicated than a sponge?
The body of a starfish (phylum:echinoderm) has nerves and tissues, while a sponge (porifera) does not. Sponges do not have any appendages, hence they are not motile. Neither sea stars nor sponges have a brain, and the sea stars nervous system is quite simple. Sea stars also have digestive organs, tube feet, and sesory cells that can detect light, gravity, and chemicals. Sponges do not. Thus, Porifera is the lowest phylum in the kingdom of Animalia.
What has the author Steven Andrew Torrence written?
Steven Andrew Torrence has written: 'Ascidian larval nervous system' -- subject(s): Protochordates, Sea squirts, Nervous system, Larvae
What are the main characteristics and groups of echinoderms?
Echinoderms are invertebrates with an internal skeleton and a system of fluid-filled tubes called a water vascular system. There are four major groups of echinoderms: sea stars, brittle stars, sea urchins, and sea cucumbers.
What phylum contains sea stars?
Includes: Sea Stars, Sea Lillies, Sea Urchins, Sea Cucumbers, Brittle Stars
Do sea stars have an open or closed circlitory system?
Sea stars use their water vascular system for circulation, excretion, and movement. This is a closed circulatory system because the fluids (water mostly) all travel through a series of stone, radial, and ring canals.
What are facts about sea stars?
sea stars have NO brains
