The sponge.
Flatworm
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.
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.
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
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.
Yes, leeches have a ventral nervous system.
Flatworm
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.
a sponge does not have a nervous system
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.
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.
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.
hormones
Neuroscience is the study of the nervous system in the animal body.
The nervous system is an essential part of life. Therefore you will not find a person or an animal without a central nervous system
bilateral nervous system
bilateral nervous system
bilateral nervous system