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| One of the folds of the cerebral cortex of the brain. |
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| A groove or depression between parts |
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| An electrical signal that propagates along the membrane of a neuron or muscle fiber. |
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| Polypeptides produced in the body that bind the neuroreceptors in brain and act on the central and peripheral nervous system to alleviate pain. |
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| The functional junction between two neurons or between a neuron and an effector. |
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| Multilayered lipid and protein covering |
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| The great commissure of the brain between the cerebral hemispheres |
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| A fluid produced by ependymal cells that cover choroid plexuses in the ventricles of the brain; the fluid circulates in the ventricles, the central canal, and the subarachnoid space around the brain and spinal cord. |
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| Neurons whose axons extend only for a short distance and contact nearby neurons in the brain, spinal cord or a ganglion |
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| A cavity in the brain filled with cerebrospinal fluid |
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| A space along a myelinated axon between the individual Schwann cells that form the myelin sheath and the neurolemma |
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| One of avariety of molecules within axon terminals that are releasing hormone or inhibiting hormone into blood capillaries of the hypothalmus. |
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| Three membranes covering the brain and spinal cord, called the dura mater, arachnoid mater and pia mater |
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