SCIENCE
NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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is an electrically excitable cell that takes up, processes and transmits information through electrical and chemical signals.
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the nervous system inside the brain and spinal cord.
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the nervous system outside the brain and spinal cord.
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In order that a human being can react to his environment
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Detailed explanation-1: -Peripheral nerves reside outside your brain and spinal cord. They relay information between your brain and the rest of your body. The peripheral nervous system is divided into two main parts: Autonomic nervous system (ANS): Controls involuntary bodily functions and regulates glands.
Detailed explanation-2: -Your peripheral nervous system (PNS) is that part of your nervous system that lies outside your brain and spinal cord. It plays key role in both sending information from different areas of your body back to your brain, as well as carrying out commands from your brain to various parts of your body.
Detailed explanation-3: -Our nervous system is divided in two components: the central nervous system (CNS), which includes the brain and spinal cord, and the peripheral nervous system (PNS), which encompasses nerves outside the brain and spinal cord.
Detailed explanation-4: -Cranial nerve ganglia, as with all ganglia, are part of the PNS. The autonomic nervous system exerts involuntary control over smooth muscle and glands. The connection between CNS and organs allows the system to be in two different functional states: sympathetic and parasympathetic.
Detailed explanation-5: -The brain is connected to the peripheral nervous system primarily by the spinal cord. The peripheral nerves in the head, or cranial nerves, connect directly to the brain. The spinal cord is a thick bundle of nerve fibers that runs up our back through the vertebrae of our backbone.