The Muscular System

1. The Muscular System

2. What does the muscular system do? • It allows for the ____________________of the body whether ____________________ or ____________________. • ____________________: muscles that you consciously control • ____________________: muscles that are not consciously controlled.

3. ___________________ Muscles • They _______________________________________________________________________________________________________________ certain substances through. • Smooth muscles are ____________________ muscles – Muscles that perform with out consciously being to to.

4. ________________ Muscles • Allow the _______________ of the body to move. They attach to the _______________ and are _______________ controlled. • _______________: Allows joint to close ex. _______________ • _______________: allows joint to open ex. _______________ • Concentric contraction: ____________________________________________________________________________________________. • Eccentric contraction: ____________________________________________________________________________________________.

5. _____________________: moving away from the center toward the left or right as in rotation. • Medial movement: ________________________________________________________________________. • A____duction: (as if lifting to the side) motion away from the center. • A____duction: (as if lowering from side) motion toward the center.

6. Cardiac Muscle • It forms the wall of the __________________. These, too, are ______________________ muscles.

7. Muscle Movements: functional name comes from the type of movement it permits. • Ex. Flexor: permits bending (flexion) • Adductor: movement toward axis (adduction) • Circumductor: allows a circular motion (circumduction) • Muscle Growth: Develops when existing muscle fibers ________________________. • Strength and size differ among individuals because of factors such as • __________________________ • __________________________ • __________________________ • __________________________

8. Major Muscles • Structure • 1. Shoulder/Neck • Pectoralis • Major • Minor • Deltoid • Rotator Cuff • Supraspinatus • Infraspinatus • Teres Minor • Subcapularis • Sternocleidomastoideus • Primary Function • 1. Shoulder/Neck • _______________________ • _______________________ • _______________________ • __________________ Example Exercise 1. Shoulder/Neck

9. Example Exercise • 2. Chest/Ab • 3. Hip • 4. Back • Structure • 2. Chest/Ab • Rectus Abdominis • Oblique • Internal, external • Transverse Abdominis • Diaphram • 3. Hip • Illiopsoas • Major, minor • Gluteus • Quadriceps • Rectus femoris, vastus lateralis, vastus medialis, vastus intermedius • Sartotius • 4. Back • Trapezius • Lattissimus Dorsi • Levator Scapulae • Rhomboids • Major, minor • Primary Function • 2. Chest/Ab • __________________Trunk • Lateral _________________ • _______________ abdomen • Raises and lowers _________ • 3. Hip • Hip _____________________ • ________________________ • ________________________ • _________________________ • 4. Back • _________________ scapula • __________________ of arm • Lateral _____________of neck • ________________ of Scapula

10. Primary Function • 5. Elbow/Wrist • Flexes • Extension • Flexion • Flexion of hand/fingers • Extension of hand/fingers • 6. Knee/Ankle • Flexes knee • Extends knee • Plantar flexion of foot • Plantar flexion of foot • Dorsiflexes • Example Exercise • 5. Elbow/Wrist • _____________________ • _____________________ • _____________________ • _____________________ • _____________________ • 6. Knee/Ankle • _____________________ • _____________________ • _____________________ • _____________________ • _____________________ • Structure • 5. Elbow/Wrist • Biceps • Triceps • Brachialis • Flexors • Extensors • 6. Knee/Ankle • Hamstring • Biceps femoris • Semitendinosus • Semimembranosus • Quadriceps • Rectus femoris • Vastus lateralis • Vastus medialis • Vastus intermedius • Gastrrocnemius • Soleus • Tibialis Anterior