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Which animal has the simplest and least organized nervous system?
Wiki User
∙ 8y ago
The sponge.
Wiki User
∙ 10y ago
Wiki User
∙ 8y agoFlatworm
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How does the heart of a double pithed frog contract in an organized manner after the nervous system is destroyed?
The nervous system is part of the respiratory and circulatory system. It is the brain, spinal cord, and nerves. When the nervous system is destroyed the heart of a double pithed frog contracts in an organized manner. This is exemplified in other animals as well for instance in alligators because the nerves for some time after death continue to fire. The firing of nerves send electrical signals to the heart and therefore pump it.
When a person is frightened by a wild animal some organ systems immediately become active while others are suppressed which system is most likely to be suppressed?
Your whole parasympathetic nervous system (the calming side of your nervous system) will be suppressed, while your sympathetic nervous system will be activated. Your digestive system will also be repressed, and, over time, your immune system could be repressed.
Is a gastropod's nervous system simple or complex?
The nervous system of gastropods includes the peripheral and central nervous system and this central nervous system consists of ganglia connected by nerve cells. some of gastropods possesses simple and some complex nervous system. EX : 1) snail : Complex nervous system 2) chitons : simple nervous system
What is the study of nervouse system in animal body?
A neurologist is somebody who studies and treats diseases of the nervous system. They assist patients who have stroke complications, head injuries, epilepsy, Alzheimer's disease. and other afflictions of the brain and spinal cord.neurologistneurologistNeurologistNeuroscientists, neuropsychopharmacologists, biochemists, physiologists, geneticists.
Do leeches a nervous system?
Yes, leeches have a ventral nervous system.
What has the simplest and least organized nervous system?
Flatworm
How is the nervous system organized?
The nervous system consist of the central nervous systemand the peripheral nervous system. the central nervous system consists of the brain and spinal cord and the peripheral nervous system is made up of nerves that spread throughout the body, joining all of the body parts to the central nervous system.
What is the only multicellular animal without a nervous system?
a sponge does not have a nervous system
How the nervous system organized?
The nervous system consist of the central nervous systemand the peripheral nervous system. the central nervous system consists of the brain and spinal cord and the peripheral nervous system is made up of nerves that spread throughout the body, joining all of the body parts to the central nervous system.
Do all animals have complex nervous systems?
Not all animals have complex nervous systems. In fact, most lower animals don't even show an organized nervous system. Its only in higher animals like chordates that a proper organized nervous system is seen.
What animal has the simplest brain mechanisms?
Evolution of brain is called cephalization. Worms are found to have the simplest brain mechanism and have simple straight forward nervous system i-e head to tail.
Animal responses can be controlled by the nervous system and?
hormones
The study of nervouse system in animal body called?
Neuroscience is the study of the nervous system in the animal body.
Does everbody have nerves?
The nervous system is an essential part of life. Therefore you will not find a person or an animal without a central nervous system
What type of nervous system usually has two nerves branching from a brain like at the head end of an animal?
bilateral nervous system
What type of nervous system usually has two nerves branching from a brain like structures at the head of an animal?
bilateral nervous system
What type of nervous system usually has two nerves branching from a brain like structure at the end of an animal?
bilateral nervous system
