muscle powerpoint

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Post on 14-Jun-2015

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  • 1. Muscular System

2.

  • There are about 600 muscles in your body.

3. Muscle Control

  • Involuntary Muscle: Not under conscious control.
  • Heart beat, digestion
  • Voluntary Muscle: Under your control.
  • Walking, jumping, etc.

4. 3 Types of Muscle

  • Skeletal
  • Smooth
  • Cardiac

5. Skeletal Muscle

  • Attached to bones of the skeleton.
  • Voluntary
  • Striated(lines)

6. Smooth Muscle

  • Inside many internal organs
  • Involuntary
  • Not striated

7. Cardiac Muscle

  • Heart
  • Involuntary
  • Striated
  • Does not get tired

8. Muscles at Work

  • Skeletal muscles work in pairs.
    • One muscle contracts
    • The other lengthens

9. Muscle Cells 10. Skin 11. Functions

  • Regulates body temperature
  • Stores water and fat
  • The largest organ
    • sensory organ
    • Prevents water loss Prevents entry of bacteria

12. Layers of Skin

  • Epidermisthe thin outer layer of skin that sheds
  • Dermisthe middle thick layer- contains sweat glands, nerves, and blood vessels
  • Subcutaneousthe deepest layer that contains fat and helps protect body from injury and conserve heat

13. Facts About Skin

  • An adult has more than 20 square feet of skinabout the size of a blanket.
  • You shed about 40 pounds in a lifetime.
  • Every minutes 30,000 to 40,000 dead skin cells fall from your body.

14. Facts AboutSkin

  • In a month time your body has made a new layer of skin
  • There are over a million dust mites on your mattress and pillow chomping on dead skin cells that fell off you last night.
  • The eyelid has the thinnest skin, the palms and soles are the thickest.

15. Parts of the Skin 16. Muscle, Skin, Bone Cells

  • Bone Cell
  • Muscle Cell
  • Skin Cell