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Muscle Tissues

Muscle Tissues. Muscle tissues Skeletal (striated) muscle Used to move skeleton Cardiac muscle Intercalated discs Smooth muscle Found in hollow organs and blood vessel walls. Skeletal Muscle Tissue. Figure 4.14a. Skeletal Muscle. Skeletal Muscle.

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Muscle Tissues

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  1. Muscle Tissues Muscle tissues • Skeletal (striated) muscle • Used to move skeleton • Cardiac muscle • Intercalated discs • Smooth muscle • Found in hollow organs and blood vessel walls

  2. Skeletal Muscle Tissue Figure 4.14a

  3. Skeletal Muscle

  4. Skeletal Muscle

  5. FUNCTIONS: Involuntary movement of food, and secretions; control of vessel diameter LOCATIONS: Encircles blood vessels; found in walls of hollow organs (digestive tract, etc) APPERANCE: not striated, single nuclei Smoothmusclecell Nucleus Smooth muscle

  6. Smooth Muscle Tissue Figure 4.14c

  7. Smooth muscle

  8. Smooth Muscle

  9. Smooth Muscle

  10. Cardiac Muscle Tissue Figure 4.14b

  11. LOCATIONS: walls of heart (myocardium) APPERANCE: striated with branched cells, single nuclei, and intercalated discs FUNCTIONS: involuntary beating of heart Nucleus Cardiacmusclecells Intercalated discs Striations Cardiac muscle

  12. Cardiac Muscle Cardiac muscle, longitudinal section

  13. Cardiac Muscle Intercalated discs

  14. Neuromuscular junction Motor neuron Neuromuscular junction axon

  15. Neuromuscular junction NOTE: Each muscle fiber is innervated by only ONE neuron

  16. V. Muscle Tissue Smooth Skeletal Cardiac Neuromuscular junction

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