Titlebook: Noback‘s Human Nervous System, Seventh Edition; Structure and Functi Norman L. Strominger,Robert J. Demarest,Lois B. La Book 2012Latest edi

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Neurons and Associated Cells,nto the structural and functional fabric of the brain. However, recent analyses indicate that there are only about 90 billion neurons and slightly fewer glial cells. In either case, the numbers are staggering, and they exhibit a wide diversity of form and sizes.

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Meninges, Ventricles, and Cerebrospinal Fluid,the two layers of the meninges and, thus, slowly circulates over the entire perimeter of the central nervous system (CNS). CSF also flows through the ventricles, which are the cavities within the brain derived from the central canal of the embryonic neural tube (Fig. 5.1).

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The Spinal Cord,s of the vertebral canal and is surrounded by the bony vertebral column. It is the central processing and relay station (1) receiving input via peripheral nerves from the body and via descending tracts from the brain and (2) projecting output via the peripheral nerves to the body and via the ascending tracts to the brain.

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Brainstem: Medulla, Pons, and Midbrain,o and from the cerebrum, cerebellum, and spinal cord. (2) It plays an important part in a range of activities, such as consciousness, the sleep–wake cycle, and respiratory and cardiovascular control. (3) It contains the intramedullary fibers of all but one of the true cranial nerves, and their associated sensory and motor nuclei.

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Norman L. Strominger,Robert J. Demarest,Lois B. LaSuccinct and practical introduction ot the anatomy of the human nervous system.Unique illustrations by premier medical artist Rober J. Demarest specifically prepared for this text.Coverage of dendrite

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Lesions of the Spinal Nerves and Spinal Cord,Injuries to the nervous system, as well as neurologic diseases, produce symptoms and clinical signs. This chapter outlines some effects of lesions of the spinal nerves and spinal cord. The term . refers to pathologic and traumatic tissue damage. Ensuing impairments include the loss or modification of function related to the injury.

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