3.  VOLUNTARY ACTIONS  THESE ARE THE MUSCLE ACTIONS THAT YOU CONTROL.  EXAMPLES: TALKING, SMILING, WAVING, WALKING, JUMPING, ETC.  INVOLUNTARY ACTIONS  THESE ARE THE MUSCLE ACTIONS THAT ARE AUTOMATIC AND OUT OF YOUR CONTROL.  EXAMPLES: BREATHING AND DIGESTING.

4.  SKELETAL MUSCLES: ARE ATTACHED TO YOUR BONES.  SMOOTH MUSCLES: ARE INVOLUNTARY MUSCLES FOUND INSIDE ORGANS.  CARDIAC MUSCLES: HAVE COMMONALITIES WITH SKELETAL AND SMOOTH MUSCLES. THESE MUSCLES CONTRACT TO PUMP BLOOD THROUGH YOUR BODY.

6.  Frontalis: head muscles.  Sartorious: more commonly known as the ‘thigh‘ muscles.  Biceps Femoris: more commonly known as the ‘Hamstrings‘ muscles.  Rectus Femoris: one of the four Quadriceps muscles.  Gastrocnemius: more commonly known as the ‘Calf‘ muscles.  Soleus: is a muscle in the back part of the lower leg (the calf).

7.  MUSCLES CAN ONLY CONTRACT, THEY CAN NOT EXTEND.  FOR THIS REASON SKELETAL MUSCLES WORK IN PAIRS.  ONE MUSCLE CONTRACTS, WHILE THE OTHER RETURNS TO IT’S ORIGIONAL LENGTH.

8.  MUSCLES NEED TO BE EXCERSIED.  A MUSCLE CAN LOOSE IT’S FLEXABILITY AND STRETCHINESS IF IT IS NOT CONTRACTED OFTEN.  REMEMBER, USE IT OR LOSE IT!  IF YOU DON’T USE YOUR MUSCLES, THEY MAY BECOME WEAK AND SOFT.