where are neuronal pools located?
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Quick Reference. Functional groups of neurones occurring in the grey matter of the brain and spinal cord, which process and integrate incoming information received from other sources, such as the sense organs, and transmit the processed information to other destinations.
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Multipolar neurons are the most common type of neuron. They are located in the central nervous system (brain and spinal cord) and in autonomic ganglia. Multipolar neurons have more than two processes emanating from the neuron cell body.
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Neurons are surrounded by a cell membrane. Neurons have a nucleus that contains genes. Neurons contain cytoplasm, mitochondria and other organelles. Neurons carry out basic cellular processes such as protein synthesis and energy production.
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The Nucleus of a neuron is an oval shaped membrane-bound structure found in the soma or body of the neuron. It contains the nucleolus and chromosomes, necessary for the coded production of proteins within the cell.
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FULL TEXT. The brain's lower-level structures consist of the brain stem and spinal cord, along with the cerebellum. With the exception of the spinal cord, these structures are largely located within the hindbrain, diencephalon (or interbrain), and midbrain.
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Based on their roles, the neurons found in the human nervous system can be divided into three classes: sensory neurons, motor neurons, and interneurons.
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Each mammalian neuron consists of a cell body, dendrites, and an axon. The cell body contains the nucleus and cytoplasm. The axon extends from the cell body and often gives rise to many smaller branches before ending at nerve terminals. Dendrites extend from the neuron cell body and receive messages from other neurons.
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The cell bodies of the sensory neurons leading to the spinal cord are located in clusters, the dorsal root ganglia (DRG), next to the spinal cord. Their axon extends in both directions: a peripheral axon to receptors at the periphery and a central axon passing into the spinal cord.
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The upper and lower motor neurons form a two-neuron circuit. The upper motor neurons originate in the cerebral cortex and travel down to the brain stem or spinal cord, while the lower motor neurons begin in the spinal cord and go on to innervate muscles and glands throughout the body.
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Location. They are found in the brain and retina, in this last location it is found as the amacrine cell and retina horizontal cells. They are also found in invertebrates.
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Neurons send signals to other neurons via specialized contacts known as synapses. The most common type of synapse in the nervous system is known as a chemical synapse. Typically a chemical synapse occurs between the axon terminal of the neuron sending the message, and the dendrite of the neuron receiving the message.
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Neurotransmitters are stored in synaptic vesicles, clustered close to the cell membrane at the axon terminal of the presynaptic neuron. Neurotransmitters are released into and diffuse across the synaptic cleft, where they bind to specific receptors on the membrane of the postsynaptic neuron.
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The nervous system comprises of two group of cells, glial cells and neurons.
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The neurons are single nerve cells where as nerves are elongated congregations of tissues. The neurons are found in the central and the peripheral nervous system, but the nerves are only in the peripheral nervous system.
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Motor neurons are a specialized type of brain cell called neurons located within the spinal cord and the brain. They come in two main subtypes, namely the upper motor neurons and the lower motor neurons.
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The cell bodies of all preganglionic neurons are located within the central nervous system (CNS). The cell bodies of symapathetic preganglionic neurons are located in the visceral efferent (lateral gray) column of the spinal cord.