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In this way, the information transmitted by the nervous system is specific to particular cells and is transmitted very rapidly. Figure \(\PageIndex{2}\): The human nervous system consists of the brain and spinal cord (central nervous system) and a network of branching nerves that travel throughout the body (peripheral nervous system).
Oligodendrocytes, which are also restricted to the central nervous system, lay down a laminated, lipid-rich wrapping called myelin around some, but not all, axons. Myelin has important effects on the speed of action potential conduction (see Chapter 3). In the peripheral nervous system, the cells that elaborate myelin are called Schwann cells.
Human nervous system - Brain, Spinal Cord, Neurons: The central nervous system consists of the brain and spinal cord, both derived from the embryonic neural tube. Both are surrounded by protective membranes called the meninges, and both float in a crystal-clear cerebrospinal fluid. The brain is encased in a bony vault, the neurocranium, while the cylindrical and elongated spinal cord lies in ...
Apr 20, 2020 · Nature Immunology - Mildner and colleagues characterize two subsets (Cxcl10+ and Saa3+) of monocytes with pathogenic potential in the central nervous system of mice with experimentally induced ...
Nov 3, 2023 · There are two structural divisions of the nervous system. The central nervous system or CNS (brain and spinal cord) and the peripheral nervous system or PNS (all neural tissue outside the CNS). Functionally, the peripheral nervous system is divided into the somatic nervous system and the autonomic nervous system. Informally described as our ...
Jun 15, 2023 · Primary central nervous system lymphoma (PCNSL) is a diffuse large B cell lymphoma in which the brain, spinal cord, leptomeninges and/or eyes are exclusive sites of disease. Pathophysiology is ...
Jul 30, 2022 · The brain and the spinal cord are the central nervous system, and they represent the main organs of the nervous system. The spinal cord is a single structure, whereas the adult brain is described in terms of four major regions: the cerebrum, the diencephalon, the brain stem, and the cerebellum.
