SCIENCE
NERVOUS SYSTEM
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A reflex
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The node of Ranvier
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The CNS
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The Peripheral Nervous System
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Detailed explanation-1: -The peripheral nervous system includes the nerves and ganglia outside the brain and spinal cord. The PNS includes the peripheral nerves, neuromuscular junctions, cranial nerves, and spinal nerves. This system also carries information to and from the central nervous system.
Detailed explanation-2: -Afferent neurons carry information from sensory receptors found all over the body towards the central nervous system, whereas efferent neurons carry motor information away from the central nervous system to the muscles and glands of the body in order to initiate an action.
Detailed explanation-3: -The spinal cord carries messages back and forth between the brain and the nerves that run throughout the body.
Detailed explanation-4: -Motor neurons of the spinal cord are part of the central nervous system (CNS) and connect to muscles, glands and organs throughout the body. These neurons transmit impulses from the spinal cord to skeletal and smooth muscles (such as those in your stomach), and so directly control all of our muscle movements.
Detailed explanation-5: -Thalamus: The thalamus is the relay center of the brain. It receives afferent impulses from sensory receptors located throughout the body and processes the information for distribution to the appropriate cortical area.