UAG - Nervous system
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| show | Central Nervous System (CNS) - brain and spinal cord<P><P><P>Peripheral Nervous System (PNS) - remainder of nervous system outside of the CNS
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| Functional Nervous System | show 🗑
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| show | two main cell types<P>1. Neurons (nerve cells)<P>2. Neuroglia (glial cells) which support the neurons
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| Neurons | show 🗑
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| Multipolar motor neurons | show 🗑
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| Pseudounipolar sensory neurons | show 🗑
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| Neuroglia (glial cells/glia) | show 🗑
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| show | brain and spinal cord; integrate & coordinate incoming and outgoing neural signals & to carry out higher mental functions (thinking & learning)
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| show | made of nerve cell bodies in the CNS=nucleus; in transverse section of spinal cord, gray matter appears to be an "H" in the white matter; right & left posterior(dorsal)/anterior(ventral) horns=supports of the "H"
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| White Matter | show 🗑
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| show | 1. Pia Mater - innermost, delicate, transparent layer
<P>2. Arachnoid Mater - middle layer
<P>3. Dura Mater - thick, tough layer<P><P><P>Cerebrospinal fluid (CSF) is b/w pia mater & arachnoid mater
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| show | consists of nerve fibers & cell bodies outside CNS that conduct impulses to or away from CNS; organized into nerves that connect CNS with peripheral structures
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| show | axon, neurolemma (cell membranes of Schwann cells surrounding axon,has 2 forms), & surrounding endoneurial connective tissue
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| show | 1. myelinated, consisting of Schwann cells specific to individual axon, organized in a continuous series forming myelin cells
<P>2. unmyelinated, composed of Schwann cells that don't make up an apparent series, multiple axons are separately embedded
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| Nerve tissue coverings | show 🗑
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| show | convey neural impulses to the CNS from the sense organs (e.g., the eyes) & from sensory receptors in various parts of the body (e.g., in the skin)
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| PNS efferent (motor) fibers | show 🗑
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| Cranial Nerves | show 🗑
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| Spinal (Segmental) Nerves | show 🗑
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| Spinal Nerves - roots | show 🗑
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| Rami of Spinal Nerves - motor & sensory | show 🗑
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Created by:
sgarcia31
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