muscular system

• muscular system - enables movement of the body, maintains posture, circulates blood, and produces heat
• functions:

  movement

  maintaining body position

  support of soft tissues

  regulating entrances/exits

  maintaining body temperature
• skeletal muscle (muscle fibers) - multinucleated, attached to the bones by tendons and produces voluntary movements
• cardiac muscle - one nucleus centrally located in the cell, forms the heart
• smooth muscle

  • single nucleus
  • involuntary, non-striated tissues found in hollow organs, blood vessels, and eyes
• types:

  skeletal muscle

  cardiac muscle

  smooth muscle