1. Skeletal Muscle
Prime mover (agonist)
Antagonist
Synergist
Fixators

2. Naming of Skeletal Muscles
Location of muscle
Shape of muscle
Size of muscle
Direction of fibers
# of origins
Location of attachments
Action

5. Muscle Mechanics Arrangement of fascicles Lever Systems
Circular, pennate, parallel, convergent
Lever Systems
Mechanical advantage – moving large load over a small distance with little effort (power lever)
Mechanical disadvantage – effort exerted greater than load (speed lever)
1st - seesaws – effort (tension) at one end, load at other, fulcrum in middle, 2nd - effort and fulcrum at ends, load in middle, 3rd class – great speed – effort between load and fulcrum

6. Facial Muscles

8. Neck Muscles Sternocleidomastoid – PM head flexion
Scalenes – flexion and rotation
Splenius – extend or hyperextend (posterior neck)

10. Back Extensors
Erector spinae
Semispinalis
Quadratus lumborum

11. Breathing Diaphragm External intercostals – inspiration
Internal intercostals - expiration

13. Compression of Abdomen
External obliques, internal obliques, transversus abdominis
Rectus abdominis
Valsalva maneuver – abdominal muscles contract, along with diaphragm; glottis closed

15. Pelvic Floor and Perineum
Levator ani
Coccygeus
External anal sphincter
External urethral sphincter
Ischiocavernosus
Bulbospongiosus

17. Shoulder movements Pectoralis minor Serratus anterior Subclavius
Trapezius
Levator scapulae
Rhomboids

19. Arm Movements Pectoralis major Latissimus dorsi Deltoid Subscapularis
Supra- and infraspinatus
Teres major and minor
Coracobrachialis