Function+and+Movement+of+Major+Muscles

Function and Movement of Major Muscles

** Deltoid ** - Raises your arm sideways at the shoulder. (Abduction) Lifts your arm forward at the shoulder. (Flexion)



** Biceps ** - Bends your arm at the elbow. (Flexion)

** Triceps ** - Stra  ightens your arm at the elbow joint. (Extension)



**Abdominals-** Pull in the abdomen. Flextion of the spine so you can bend forward. ** Pectorals ** - Raises your arm at the shoulder. (Flexion) Draws it across your chest. (Lateral Adduction)



** Latissimus Dorsi (lats) ** - Pulls your arm down at the shoulder. (Extension) Draws it behind your back. (Lateral Abduction)

** Trapezius ** - Holds and rotates your shoulders. Moves your head back and sideways.

** Quadriceps ** - Straighten the leg at the knee. Keep it straight when you stand. (Extension)

** Hamstrings ** - Bend your leg at the knee. (Flexion)

** Gluteals ** - Pull y  our leg back at the hip. Raise it sideways at the hip. (Flexion)

** Gastrocnemius ** - Straightens the ankle joint so you can stand on your tiptoes. (Plantar Flexion)