MUSCULAR SYSTEM

• Fascicle is a bundle of muscle fibers surrounded by perimysium
• Abductors is the one who pulls parts away from the body axis
• According to the sliding filament theory, what happens to the sarcomere during muscle contraction?

  A The actin and myosin filaments themselves shorten in length.

  B. The myosin cross-bridges detach from the actin filaments.

  C. The Z-discs (ends of the sarcomere) move further apart.

  D. The thin (actin) and thick (myosin) filaments slide past each other.
• What is the name of the muscle pointed in the picture?

  Dorsalis Scapulae

  
• What is the name of the muscle pointed in the picture?

  Pectoralis Sternalis

  
• What is the name of the muscle pointed in the picture?

  Gastrocnemius

  
• What is the name of the muscle pointed in the picture?

  Adductor Longus

  
• What is the function of the muscle pointed in the picture?

  Supports the abdomen, holds the sternum

  
• What is the function of the muscle pointed in the picture?

  Extensor of the back

  
• What is the function of the muscle pointed in the picture?

  Elevates the lower jaw and closes the mouth