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•Pronator Teres
- •Action: Pronates and flexes forearm
- •Origin: Medial epicondyle of humerus; coronoid process of ulna
- •Insertion: Lateral surface of radius
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•Flexor Carpi Radialis
- •Action: Flexes wrist and elbow and abducts wrist
- •Origin: Medial epicondyle of humerus
- •Insertion: Base of metacarpal of the second digit
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•Palmaris Longus
- •Action: Weak flexion of wrist, tenses skin of palm
- • Origin: Medial epicondyle of humerus
- •Insertion: Flexor retinaculum; palmar aponeurosis
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•Flexor Carpi Ulnaris
- Action: Flexes and adducts wrist
- •Origin: Medial epicondyle of humerus; olecranon process of ulna
- •Insertion: medial carpal bones; metacarpal of 5th digit
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•Flexor Digitorum Superficialis
- •Action: Flexes fingers and wrist
- •Origin: Medial epicondyle of humerus; coronoid process of ulna; anterior surface of radius
- •Insertion: Middle phalanges of medial 4 digits
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•Flexor digitorum profundus
- •Action: Flexion of wrist and fingers
- •Origin: Medial and anterior surfaces of ulna; interosseous membrane
- •Insertion: Distal phalanges of fingers
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•Flexor Pollicis Longus
- •Action: Flexes thumb and wrist
- •Origin: Middle half of radius; interosseous membrane, coronoid process of ulna
- •Insertion: Distal phalanx of thumb
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•Brachioradialis
- •Action: Flexes forearm
- •Origin: Lateral supracondylar ridge
- •Insertion: Lateral surface of distal radius
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•Extensor Carpi Radialis Longus
- •Action: Extends and abducts hand
- •Origin: Lateral supracondylar ridge of humerus
- •Insertion: Second metacarpal
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•Extensor Carpi Radialis Brevis
- •Action: Extends and abducts hand
- •Origin: Lateral epicondyle of humerus
- •Insertion: Third meta carpal
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•Extensor Digitorum
- •Action: Extends fingers and hand
- • Origin: Lateral epicondyle of humerus
- •Insertion: Extensor expansions of medial four digits
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•Extensor Digiti Minimi
- •Action: Extends 5th digit and hand
- • Origin: Lateral epicondyle of humerus
- •Insertion: Extensor expansion of the fifth digit
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•Extensor Carpi Ulnaris
- •Action: Extends and adducts hand
- •Origin: Lateral epicondyle of humerus; posterior surface of ulna
- •Insertion: Metacarpal of the fifth digit
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•Anconeus
- Action: Very weak extension of the forearm
- •Origin: Lateral epicondyle of humerus
- •Insertion: Olecranon process of ulna
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•Abductor pollicis longus
- •Action: Abducts and extends thumb
- •Origin: posterior surface of ulna and radius
- •Insertion: first metacarpal
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•Extensor Pollicis Longus
- •Action: Extends thumb
- •Origin: Posterior surface of ulna and interosseous membrane
- •Insertion: Distal phalanx of thumb
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•Extensor Pollicis Brevis
- •Action: Extends thumb
- •Origin: Posterior surface of radius and interosseous membrane
- •Insertion: Proximal phalanx of thumb
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•Supinator
- •Action: Supinates forearm
- •Origin: Lateral epicondyle of humerus; proximal ulna
- •Insertion: Posterior, lateral and anterior surfaces of proximal radius
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•Abductor pollicis brevis
- •Action: Abducts thumb and aids in flexion
- •Origin: scaphoid and trapezium
- •Insertion: Proximal phalanx of thumb
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•Flexor pollicis brevis
- •Action- flexes thumb
- •Origin- Trapezium
- •Insertion: Proximal phalanx of thumb
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•Flexor digiti minimi
- •Action: Flexes fifth digit
- •Origin: hook of hamate
- •Insertion: proximal phalanx of fifth digit
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•Abductor digiti minimi
- •Action: Abducts fifth digit
- •Origin: Pisiform and tendon of flexor carpi ulnaris
- •Insertion: Proximal phalanx of fifth digit
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•Gluteus Maximus
- •Action: Principal extensor and lateral rotator of femur
- •Origin: Lateral surface of ilium; dorsal surface of scrum and coccyx
- •Insertion: iliotibial tract; gluteal tuberosity of femur
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•Gluteus Medius
- •Action: Abduction and medial rotation of femur
- •Origin: Lateral surface of ilium
- •Insertion: Greater trochanter of femur, lateral surface
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•Piriformis
- •Action- laterally rotates thigh at hip joint, abducts thigh
- •Origin: Anterior surface of sacrum
- •Insertion: Greater trochanter of femur superior surface
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•Quadratus Femoris
- •Action: Rotates thigh laterally
- •Origin: Ischial tuberosity
- •Insertion: Greater trochanter of femur
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•Psoas Major
- •Action: flexion of the thigh
- •Origin: Transverse processes of bodies of lumbar vertebrae
- •Insertion: Lesser trochanter of femur with iliacus
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•Iliacus
- •Action: Flexes thigh and laterally rotates femur
- •Origin: Iliac fossa and lateral margin of scrum
- •Insertion: Lesser trochanter of femur with psoas major
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•Sartorius
- •Action: Flexes both femur and tibia
- •Origin: Anterior superior iliac spine
- •Insertion: Medial margin of tibial tuberosity
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•Rectus Femoris
- •Action: Extends tibia and flexes femur
- •Origin: Anterior inferior iliac spine and upper margin of acetabulum
- •Insertion: Tibial tuberosity
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•Vastus Lateralis
- •Action: Extension of leg
- •Origin: Intertrochanteric line and linea aspera of femur
- •Insertion: Tibial tuberosity
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• Vastus Medialis
- •Action: Extends tibia
- •Origin: Intertrochanteric line and linea aspera of femur
- •Insertion: Tibial tuberosity
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•Vastus Intermedius
- •Action: Extends tibia
- •Origin: Upper shaft of femur
- •Insertion: Tibial tuberosity
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