Muscular System

• Muscular system includes:

  all muscle tissues of the body
• Three (3) types of muscles:

  1. skeletal
  2. smooth
  3. cardiac
• Most of the muscle mass of the body is?

  skeletal muscle
• Skeletal muscle

  • is striated and under voluntary control.
  • the voluntary muscles act in conjunction with the skeleton to allow body movement.
  • 43% of the weight of the body is accounted for by voluntary or striated skeletal muscle.
• Smooth muscle

  • it is involuntary, their contraction usually is not under voluntary or conscious control.
  • located in the walls of hollow internal organs (blood vessels, the stomach, and intestines.)
• Cardiac muscle


  found only in the walls of the heart.

  involuntary but striated.
• Three (3) functions of muscle tissue:

  1. To allow movement, such as locomotion of the body or movement of substances through the alimentary canal.
  2. To maintain posture.
  3. To produce heat.