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10 Cards in this Set
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- Back
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What does the term horizontal section mean?
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A horizontal plane cuts across a structure at right angles to the long axis of a structure creating a horizontal section, or cross, section.
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What about coronal section?
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A coronal plane divides a structure into anterior and posterior portions. The plane of an actual cut is used to name the cut surface. A cut through the brain along the coronal plane is called a coronal section.
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What is a sagittal section?
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A sagittal plane divides a structure into right and left portions. A midsagittal plane divides a structure into right and left halves, while a parallel cut produces parasagittal sections.
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What is white matter?
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- collection of myelinated fibers
- areas with a large proportion of myelin appear white because of the high fat content of myelin - divided into 3 columns: anterior, lateral and dorsal |
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What is gray matter?
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- collections of cell bodies and dendrites
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What is a nucleus?
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A group of cell bodies in the CNS
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What is a ganglion?
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A group of cell bodies in the PNS
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What is the cortex?
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Gray matter on the surface of the brain
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What is the cerebral cortex responsible for?
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- reasoning, language, non-verbal communication, intelligence, personality
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What is afferent?
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- carries information from the peripheral receptors toward the CNS.
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