-
Deltoid
- O: Clavicle, acromion process and spine of scapula
- I: Deltoid tuberosity
- Action: Abduct shoulder
-
Supraspinatus
- O: Supraspinous fossa
- I: Superior part of greater tubercle
- Action: Abduct shoulder
-
Infraspinatus
- O: Infraspinatous fossa
- I: Middle part of greater tubercle
- Action: Laterally rotate shoulder
-
Subscaularis
- O: Subscapular fossa
- I: Lesser tubercle
- Action: medially rotate shoulder
-
Teres Minor
- O: Lateral border of scapula
- I: Inferior part of greater tubercle
- Action: Laterally rotate shoulder
-
Teres Major
- O: Inferior angle of scapula
- I: Distal to lesser tubercle
- Action: Medially rotate shoulder, adduct, extend shoulder
-
Triceps Brachii
- O: Long head-infraglenoid tubercle
- Lateral head-lateral and posterior surface of humerus superior to radial groove
- Medial head-posterior surface of humerus inferior ro radial groove
- I: Olecranon Fossa
- Action: Extend elbow
-
Coracobrachialis
- O: Coracoid process
- I: Medial surface of humerus
- Action: Flex, adduct shoulder
-
Biceps Brachii
- O: Long head-supraglenoid tubercle
- Short head-coracoid process
- I: Radial tuberosity
- Action: Flex elbow, supinate radius
-
Brachialis
- O: Anterior surface of humerus
- I: Ulnar tuberosity and coronoid process of ulna
- Action: Flex elbow
-
Rectus Femoris
- O: Anterior inferior iliac spine
- I: Tibial tuberosity
- Action: Flex hip, extend knee
-
Vastus Lateralis
- O: Greater trochanter and linea aspera
- I: Tibial tuberosity
- Action: Extend knee
-
Vastus Medialis
- O: Linea aspera
- I: Tibial tuberosity
- Action: Extend knee
-
Vastus Intermedius
- O: Anterior and lateral surfaces of shaft of femur
- I: Tibial tuberosity
- Action: Extend knee
-
Adductor Longus
- O: Anterior body of pubis
- I: Linea aspera
- Action: Adduct hip
-
Adductor Brevis
- O: Inferior pubic ramus
- I: Linea aspera
- Action: Adduct hip
-
Adductor Magnus
- O: Inferior pubic ramus, ischial ramus, ischial tuberosity
- I: Linea aspera
- Action: Adduct, flex hip
-
Biceps Femoris
- O: Long head-ischial tuberosity
- Short head-linea aspera
- I: Lateral condyle of tibia and head of fibula
- Action: Extend hip, flex knee
-
Semitendinosus
- O: Ischial tuberosity
- I: Medial surface of tibia
- Action: Extend hip, flex knee
-
Semimembranosus
- O: Ischial tuberosity
- I: Medial condyle of tibia
- Action: Extend hip, flex knee
-
Gastrocnemius
- O: Posterior side of medial and lateral condyles of femur
- I: Calcaneus
- Action: Flex knee, plantar flex ankle
-
Soleus
- O: Posterior fibula, soleal line
- I: Calcaneus
- Action: Plantar flex ankle
-
Tibialis Anterior
- O: Lateral condyle and lateral surface of tibia
- I: First metatarsal and first cuneiform
- Action: Dorsiflex, invert ankle
-
Frontalis Action
Elevate eyebrows
-
Temporalis action
Elevate, retract mandible
-
Masseter action
Elevate, protract mandible
-
Buccinator action
compress cheeks, assist in mastication (keeps food between teeth)
-
Obicularis oculi
Close eyes (squint, blink)
-
Obicularis oris
Close, protrude lips
-
Sternocleidomastoid action
Flex, rotate neck, elevate sternum
-
Trapezius action
Elevate, adduct, stabilize scapula, extend neck
-
Levator scapulae action
Elevate scapula
-
Rhomboid major
retract, adduct scapula
-
Rhomboid minor action
Retract, adduct scapula
-
Latissimus dorsi action
Extend, adduct, medially rotate shoulder
-
Pectoralis major action
Flex, adduct, medially rotate shoulder
-
Pectoralis minor action
Depress scapula
-
Serratus anterior action
abduct, protract scapula
-
Brachioradialis action
flex elbow, supinate, pronate radius (return to relaxed position)
-
Palmaris longus
flex wrist
-
Flexor carpi radialis action
Flex, abduct wrist
-
Flexor carpi ulnaris action
Flex, adduct wrist
-
Extensor digitorum action
Extend fingers
-
Extensor carpi radialis longus action
Extend, abduct wrist
-
Extensor carpi radialis brevis action
extend, abduct wrist
-
Extensor carpi ulnaris action
extend abduct wrist
-
Diaphragm action
Inspiration
-
External intercostals action
elevate ribs during inhalation
-
Internal intercostals action
Depress ribs during active exhalation
-
Rectus abdominis action
flex vertebral column, compress abdomen
-
External obliques action
Flex, laterally flex and rotate vertebral column
-
Internal obliques action
laterally flex and rotate vertebral column; compress abdomen
-
Transverse abdominis action
compress abdomen
-
Psoas major action
flex vertebral colum, flex hip
-
Sartorius action
flex, laterally rotate hip, flex knee
-
Gracilis action
flex, adduct hip, flex knee
-
Pectineus action
flex, adduct hip
-
Gluteus maximus action
Extend, laterally rotate hip
-
Gluteus medius action
abduct hip
-
Plantaris action
Plantar flex ankle
-
Popliteus action
medially rotate tibia (unlock knee)
-
Peroneus (fibularis) longus action
plantar flex and evert ankle
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