Nervous & Muscle Tissue
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Nervous Tissue1. Main component of the
nervous system2. Brain, spinal cord, and nerves
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Neurons1. highly specialized2. generate and conduct nerve
impulses
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Muscle Tissue• Well vascularized• 3 types• Skeletal, cardiac, smooth
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Skeletal1. As they contract, they pull on
bones or skin, causing body movements
2. Skeletal muscle cells are also called muscle fibers
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Skeletal• Striated, long, & cylindrical
appearance
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Cardiac Muscle1. Found only in heart2. Also striated, but different
from skeletal
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Cardiac1. Uninucleate2. Branching cells that fit together
tightly and unique junctions called intercalated discs
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Smooth1. No visible striations2. spindle shaped3. One centrally located nucleus
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Smooth1. walls of hollow organs other
than the heart,2. alternately contracts and relaxes3. involuntary control
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