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17 Cards in this Set
- Front
- Back
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Neurons |
Nerve cells, including its processes axons and dendrites |
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Dendrites |
Branching or tree ; nerve cell process that transmit impulses toward the body |
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glia |
support nerve cells also called astrocytes
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axon |
nerve cell process that transmits impulses away from the cell body. elongated projection of the cell body |
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Central Nervous system |
the part of the nervous system which in vertebrates consists of the brain and spinal cord, to which sensory impulses are transmitted and from which motor impulses pass out, and which supervises and coordinates the activity of the entire nervous system |
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peripheral Nervous system |
the part of the nervous system that is outside the central nervous system and comprises the cranial nerves excepting the optic nerve, the spinal nerves, and the autonomic nervous system |
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autonomic nervous system |
nervous system that innervates smooth and cardiac muscle and glandular tissues and governs involuntary actions (as secretion, vasoconstriction, or peristalsis) and that consists of the sympathetic nervous system and the parasympathetic nervous system |
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afferent Neurons |
Carry impulses to the spinal cord and brain from all parts of the body also called sensory neurons |
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efferent neurons |
carry impulses away from the brain and spinal cord. not conducting impulses to all parts of the body, only two types of tissue- muscle and glandular epithelial . also called motor neurons |
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Interneurons |
conduct impulses from sensory neurons to motor neurons. also called central or connecting neurons. |
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microglia |
when inflamed or degenerating they surround the microbes, draw them into their cytoplasm and digest them |
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olijodendrocytes |
help to hold nerve fibers together and also serve another |
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Neurilemma |
the outer layer surrounding a Schwann cell of a myelinated axon — called also nerve sheath, Schwann's sheath, |
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enduoneurium |
the delicate connective tissue network holding together the individual fibers of a nerve trunk |
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fascilcles |
groups of wrapped axons |
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perineurium |
each fascicle is surronded by this thin fiberous sheath |
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epineurium |
a tough, fibrous sheath covers the whole nerve |
