1. Skeletal Muscle Groups

2. Head and Neck Facial muscles
Orbicularis oculi= circular muscle around the eye
Orbicularis oris= circular muscle around the mouth
Zygomaticus=smiling muscles
Masseter=mastication
Temporal= mastication

3. Head and Neck Sternocleidomastoid: flexes head
Trapezius: shrugs shoulders, extends head

4. Upper Extremities Pectoralis major: flexes upper arm (chest muscle)
Latissimus Dorsi: extends upper arm (on back)
Deltoid: abducts upper arm
Biceps Brachii: flexes forearm
Triceps Brachii: extends forearm

5. Trunk/Torso Abdominals: Rectus Abdominus (6 pack)
External Oblique (R & L flank)
Internal Oblique
Transverse Abdominus

6. Respiratory Muscles
Intercostals (between each rib)
Diaphragm

7. Muscles that move lower extremities
Gluteus Maximus: extends thigh
Adductor Muscles: adducts thighs
Hamstring Muscles:
Semimembraneous
Semitendinosus Flexes Lower Leg
Biceps Femoris

8. Quadriceps femoris Extends lower leg Rectus femoris Vastus Lateralis
Vastus intermedius
Vastus medialis

9. Muscles of lower leg Tibialis anterior: dorsiflexes foot
Gastrocnemius: plantar flexes foot
Peroneus Group: flexes foot

10. Types of Movements
Flexion: decreases the angle between 2 bones at the joint.. (Bending)
Extension: increases the angle between 2 bones at the joint…(straightening)
Abduction: movement away from the midline
Adduction: Movement toward the midline

11. Types of Movement Rotation: movement around a longitudinal axis
Hand positions that results from rotation of the forearm.
Supination
Pronation