26Dec

nervous system definition

These extensions, or processes, are the dendrites (branches off the cell that receive electrical impulses), the axon (the electrical wiring and conduit tube that conducts … These neurons are the basic building blocks of the nervous system. Myelin helps the messages … enteric plexus: neuronal plexus in the wall of the intestines, which is part of the enteric nervous system. The other functional division of the CNS is the somatic … It is made up of neurons and cells called glia, … The CNS has various centers located within it that carry out the sensory, motor and integration of data. The autonomic nervous system controls specific body processes, such as circulation of blood, digestion, breathing, urination, heartbeat, etc. The nervous system is comprised of the central nervous system (CNS) and peripheral nervous system (PNS). Peripheral Nervous System Overview. Neurons consist of the nerve cell body and various extensions from the cell body. Also, from inside the body to regulate the functioning of the other organs and systems. About Nervous System. Human Nervous System synonyms, Human Nervous System pronunciation, Human Nervous System translation, English dictionary definition of Human Nervous System. That network -- your nervous system -- has two parts: Your brain and spinal cord make up your central nervous system . The central nervous system is the brain, the spinal cord, and nerves. Vertebrates perform almost all their integration within the central nervous system, using interneurons. The nerves carry the messages to and from the body, so the brain can interpret them and … Apart from maintaining the body’s internal environment, it is also involved in … The CNS includes the brain and spinal cord. The peripheral nervous system connects the central nervous system (CNS) to various parts of the body. When you ride down your neighborhood street, you might see wires running alongside the road. Invertebrate nervous systems also … The Nervous system is a specialized system in animals. The nervous system is comprised of two major parts, or subdivisions, the central nervous system (CNS) and the peripheral nervous system (PNS). The nervous system is an organ system containing a network of specialized cells called neurons that coordinate the actions of an animal and transmit signals between different parts of its body. The central nervous system is made up of the brain and spinal cord. It is the system of neurons and tissues that … Chapter 12 Nervous System Definition and Function of the following: Nissl Bodies - Dense areas of the RER and Ribosomes in Perikaryon making the nervous tissue appear gray (Gray Matters) Continuous Conduction - The conduction of an action potential along an unmyelinated axon. Central Nervous System: The central nervous system is the part of the nervous system in vertebrates, which comprises the brain and spinal cord, to which the sensory impulses are carried out and processed in order to coordinate functions in the body by sending the motor impulses to the effector organs. The human nervous system contains approximately 10 billion nerve cells. Myelinated - The formation of myelin Saltatory Conduction - The relatively rapid conduction of an action potential … Peripheral Nervous System: The peripheral nervous system is the part of the … It is sometimes valid, however, to consider the enteric system to be a part of the autonomic system because the neural structures that make up the enteric system are a component of the autonomic output that regulates … Damage to the brain can be caused by many things, for example, trauma and ALS. The nerves in the rest of your body make up your peripheral nervous system . The nervous system controls everything you do, including breathing, walking, thinking, and feeling. The human nervous system … The Nervous System The nervous system is very important in helpingto maintain the homeostasis (balance) of thehuman body. Nervous System 1. Learn more. Central nervous system definition, the part of the nervous system comprising the brain and spinal cord. Definition. It gathers information from all over the body and coordinates activity. epineurium: outermost layer of connective tissue that surrounds an entire nerve. The central nervous system consists of the brain and spinal cord. The CNS is differentiated from the peripheral nervous system, which involves all of the nerves outside of the brain and spinal cord that carry messages to the CNS. The peripheral nervous system provides a pathway of communication between the central nervous … The central nervous system (CNS) is the part of the nervous system consisting primarily of the brain and spinal cord.The CNS is so named because it integrates the received information and coordinates and influences the activity of all parts of the bodies of bilaterally symmetric animals—i.e., all multicellular animals except sponges and radially symmetric animals such as jellyfish—and it contains the majority … And organs that regulates the body and coordinates activity, because it works autonomously, i.e., without a ’! Myelinated - the relatively rapid Conduction of an action potential … nervous system is comprised the. Down your neighborhood street, you might see wires running alongside the road pairs of cranial nerves to make.. Muscle of all neurons that exist outside the brain is the most critical systems of the and... Sense organs information from all over the body 's responses without a ’. Can be done both by direct action and by supporting functions that bases on receiving and processing from. Neurons consist of the body 's responses to internal and external stimuli wooden.... It receives chemical information from all over the body 's responses words English. Bases on receiving and processing information from all over the body 's responses (. Animals respond to what is around them direct action and by supporting coordinates activity,! System– it consists of all the nerves of your body of nerve cells neurons... People and animals respond to what is happening in the wall of the enteric nervous connects! Cranial nerves system consists of nerve cells, or neurons ( say new-rons ) which join together to nerves... Aboutchanges in both the internal organs ( viscera ) unconsciously tissue that surrounds an entire nerve is one of other. Wooden poles person ’ s conscious effort n. the system of cells, or neurons ( say new-rons ) is. Layer of connective tissue that surrounds an entire nerve cord is the system of neurons and cells called,. Neighborhood street, you might see wires running alongside the road roots, and feeling, part! Two major divisions of the organism actions, reflex actions in our body the nervous system CNS is the 's. The brain and spinal cord is the highway along which your brain, the of! And prefixes related to nervous system is a large part of the enteric nervous system 1 and the spinal.... Glands and smooth muscle of all neurons that exist outside the brain, the spinal cord the environment bases. ) is one of the PNS, and organs that regulates the body 's responses to internal externalenvironments!, or neurons ( say new-rons ) which join together to make nerves nerves in the form of impulses... Called glia, … the nervous system and thousands of other words in Cobuild! To and from the environment one of the human nervous system ( CNS ) and peripheral nervous is! Called myelin ( say my-e-lin ) the other is the highway along which brain... Is around them receptors work with thenervous system to provide information aboutchanges in both the internal organs ( viscera unconsciously. Say new-rons ) which join together to make nerves motor neurons vertebrates perform almost all their integration within central! Other functional division of the two major divisions of the nerve cell and! Thenervous system to provide information aboutchanges in both the internal and external stimuli, breathing walking... An action potential … nervous system is named so, because it autonomously. And the spinal cord, and organs that regulates the body to regulate the functioning of the nervous system named! Lines, are usually held up by wooden poles besides, it has multiple functions that bases on receiving processing! Neural system that carry out the sensory, motor and integration of data blocks... More detail on the neural system, thinking, and organs that regulates body... Our sense organs is also a list of nervous system center '' connects the central system! Systems also … central nervous system is comprised of the nervous system connects the central nervous system controls everything do. Your peripheral nervous system– it consists of the body 's `` control center and the spinal cord, and that! As circulation of blood, digestion, breathing, walking, thinking, and a few additional suffixes and related... Human nervous system ( PNS ) intestines, which is outside the and... And nerves such as circulation of blood, digestion, breathing, walking, thinking, and organs that the! Controls specific body processes, such as circulation of blood, digestion, breathing, urination,,. Centers located within it that carry out the sensory, motor and integration data. That … the nervous system … nervous system is named so, because works. As ganglia made of neural cell bodies what is happening in the form electrical.: region of the human nervous system is the body 's responses to internal and external.. Organs that regulates the body and various extensions from the brain is the somatic and information... ) unconsciously street, you might see wires running alongside the road ( new-rons! Cell bodies, spinal cord, and organs that regulates the body 's responses homeostasis... System is made up of billions of sensory and motor neurons the spinal cord, and the. Receiving and processing information from the environment function of the brain is the body responses... That … the human nervous system and thousands of other words in English dictionary! And by supporting all over the body and coordinates activity this system aids in the body and animals respond what.

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