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Muscle Tissues Muscle tissues Skeletal (striated) muscle

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Presentation on theme: "Muscle Tissues Muscle tissues Skeletal (striated) muscle"— Presentation transcript:

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 Copyright © 2005 Pearson Education, Inc., publishing as Benjamin Cummings

2 Skeletal Muscle Tissue
Figure 4.14a Copyright © 2005 Pearson Education, Inc., publishing as Benjamin Cummings

3 Skeletal Muscle

4 Skeletal Muscle

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

6 Smooth Muscle Tissue Figure 4.14c
Copyright © 2005 Pearson Education, Inc., publishing as Benjamin Cummings

7 Smooth muscle

8 Smooth Muscle

9 Smooth Muscle

10 Cardiac Muscle Tissue Figure 4.14b
Copyright © 2005 Pearson Education, Inc., publishing as Benjamin Cummings

11 Cardiac muscle LOCATIONS: walls of heart (myocardium)
APPERANCE: striated with branched cells, single nuclei, and intercalated discs FUNCTIONS: involuntary beating of heart Nucleus Cardiac muscle cells Intercalated discs are made of gap junctions AND desmosomes (like rivets) Intercalated discs Striations Cardiac muscle

12 Cardiac muscle, longitudinal section

13 Cardiac Muscle Intercalated discs

14 Neuromuscular junction
Motor neuron Neuromuscular junction axon

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

16 V. Muscle Tissue Smooth Skeletal Cardiac Neuromuscular junction

17 Neuromusclular Junction

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