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11 Cards in this Set
- Front
- Back
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Central NS |
Brain and spinal cord Integrative and control centers |
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Peripheral NS |
Cranial nerves and spinal nerves Communication line between the CNS and the rest of the body |
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Sensory(affront) division |
Somatic and visceral sensory nerve fibers Conduct impulses from receptors to the CNS |
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Motor(efferent) division |
Motor nerve fibers Conducts impulse from the CNS to effectors (Muscles and glands) |
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Somatic NS |
Somatic motor (voluntary) Connections impulses from CNS to skeletal muscle |
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Autonomic NS |
Visceral motor (Involuntary) Conducts impulse to cardiac and smooth Mucle and glands. |
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2 types of cells |
Neurons: excitable nerve cells that transmit nerve signals Neuralgial (glial) cells: surround and support neurons |
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Types of Neuroglial cells |
Oligodendrocyte: form myelin sheaths (wraps call membrane, to insulate) in CNS Astrocytes: keeps things together, and forms blood brain barrier (BBB). Most abundant glial cells. Sclerosis- damaged neurons replace by hardened mass of astrocytes |
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Cerebral spinal fluid |
Formed by ependymal cells |
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ependymal cells |
Line cavities and produce CSF |
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Microglia |
(Macrophages) formed from monocytes Concentration on areas of inflection or trauma |
