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Muscular System

Muscular System. By: Morgan Davis & Hannah Williams. Anatomy. Three types of muscles; skeletal, smooth or visceral, and cardiac. Skeletal-Muscle is attached to the bone. They are striated and voluntary.

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Muscular System

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  1. Muscular System By: Morgan Davis & Hannah Williams

  2. Anatomy • Three types of muscles; skeletal, smooth or visceral, and cardiac. • Skeletal-Muscle is attached to the bone. They are striated and voluntary. • Smooth-Muscle lines the internal part of the organs and they are not striated. They are involuntary muscles. • Cardiac-The muscle is only found in the heart. They are striated and involuntary.

  3. Anatomy (continued) • Sphincter or dilator muscles are special muscles in the openings between the esophagus and the stomach.

  4. Physiology • Contractibility is when a muscle shortens or contracts and reduces the distance between the parts of its contents or the spaces it surrounds. • Excitability is the ability to respond to certain stimuli.

  5. Physiology (continued) • Extensibility is the ability to be stretched. • Elasticity is the ability to return to original length when relaxing.

  6. Pathophysiology • One disorder of the muscular system is tetanus (lockjaw). This is an infectious disease characterized by continuous spasms of the voluntary muscles. Caused by the toxin bacillus. • Shin Splints- Injury to the muscle tendon in front of the shins. Occurs when jogging.

  7. Pathophysiology (continued) • Hernia- Occurs when an organ protrudes through a weak muscle. There are three types of hernias, which include abdominal hernia, inguinal hernia, and hiatal hernia. • Strain-a tear in the muscle resulting from excessive use.

  8. Corresponding Systems • Nervous System • Special Senses • Skeletal System

  9. Citations • Orange Book • www.google.com/images

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