explain breifly about nervous system in animals
Answers
Animals are the only living things on Earth with complex nervous systems that first receive and interpret sensory signals from the environment and then send out messages to direct the animal’s response. The complexity of an animal’s nervous system depends on its lifestyle and body plan.
Animals whose bodies don’t have a defined head or tail have nerve nets, which are weblike arrangements of nerve cells that extend throughout the body.
Animals with a defined head possess a two-part nervous system:
The central nervous system (CNS) consists of the animal’s brain and central neurons. It’s housed in the head and may continue along the back.
The peripheral nervous system (PNS) consists of all the nerves that travel from the CNS to the rest of the animal’s body.
In all animals with a backbone, including you, the CNS consists of a brain and a spinal cord. The brain contains centers that process information from the sense organs, centers that control emotions and intelligence, and centers that regulate the physiological balance of the body (homeostasis). The spinal cord controls the flow of information to and from the brain.
Both the brain and the spinal cord are highly protected. First of all, they sit within a liquid called cerebrospinal fluid that guards the CNS against shocks caused by movement and they’re protected by the bones of the skull and vertebrae. CNS also supports the brain and spinal cord by supplying nutrients and helping to remove wastes.
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the network of nerve cells and fibres which transmits nerve impulses between parts of the body is called nervous system.
Animals whose bodies don’t have a defined head or tail have nerve nets, which are weblike arrangements of nerve cells that extend throughout the body.
Animals with a defined head possess a two-part nervous system:
The central nervous system (CNS) consists of the animal’s brain and central neurons. It’s housed in the head and may continue along the back.
The peripheral nervous system (PNS) consists of all the nerves that travel from the CNS to the rest of the animal’s body.
In all animals with a backbone, including you, the CNS consists of a brain and a spinal cord. The brain contains centers that process information from the sense organs, centers that control emotions and intelligence, and centers that regulate the physiological balance of the body (homeostasis). The spinal cord controls the flow of information to and from the brain.
Both the brain and the spinal cord are highly protected. First of all, they sit within a liquid called cerebrospinal fluid that guards the CNS against shocks caused by movement and they’re protected by the bones of the skull and vertebrae. CNS also supports the brain and spinal cord by supplying nutrients and helping to remove wastes.
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