-
pectoralis major
- o. medial half of clavicle, sternum, costal cartilages 1-6
- i. lateral lip of intertubercular groove on humerus
- a. flexion
-
pectoralis minor
- o. external surafxes of ribs. 3-5
- i. coracoid process of scapula
- a. depression and inferior rotation of scapula
-
serratus anterior
- o. external surface of ribs 1-8
- i. medial border of scapula
- a. protraction and superior rotation of scapula
-
latissimus dorsi
- o. spinous processes of vertebrae T6- T12, thoracolumbar fascia, iliac crest, inferior three ribs
- i. intertubercular groove on humerus
- a. extension
-
trapezius
- o. posterior surface of ocipital bone, ligamentum nuchae, spinous processes of thoracic vertebrae
- i. lateral third of clavicle, acromion process, spine of scapula
- a. superior fibers: elevate scapula
- middle fibers: retract scapula
- inferior fibers: depresses scapula
-
deltoid
- o. lateral third of clavicle, acromion process, spine of scapula
- i. deltoid tuberosity of humerus
- a. anterior fibers: medial rotation and flexion of arm
- middle fibers: abduction of arm
- posterior fibers: lateral rotation and extension of arm
-
rhomboid minor
- o. ligamentum nuchae, spinous processes of of vertebrae C7 and T1
- i. medial border of scapula
- a. elevates scapula
-
teres major
- o. scapula, near inferior angle
- i. medial lip of intertubercular groove
- a. extension
-
supraspinatus
- o. supraspinous fossa of scapula
- i. greater tubercle of humerus
- a. abduction of arm
-
infraspinatus
- o. infraspinous fossa of scapula
- i. greater tubercle of humerus
- a. lateral rotation of arm
-
teres minor
- o. lateral border of scapula
- i. greater tubercle on humerus
- a. lateral rotation of arm
-
subscapularis
- o. subscapular fossa of scapula
- i. lesser tubercle of humerus
- a. adduction and medial rotation of arm
-
biceps brachii
- o. long head: superior margin of glenoid fossa of scapulashort head: coracoid process of scapula
- i. radial tuberosity of of radius, fascia of medial forearm via bicipital aponeurosis
- a. flexion and supination of forearm
-
brachialis
- o. anterior surface of humerus
- i. coronoid process of ulna
- a. flexion of arm
-
gluteus maximus
- o. lateral surface of ilium, dorsal surface of sacrum and coccyx
- i. iliotibal tract, gluteal tuberosity of femur
- a. extension and lateral rotation of thigh
-
gluteus medius
- o. lateral surface of ilium
- i. greater trochanter of femur, lateral surface
- a. abduction and medial rotation of thigh
-
gleteus minimus
- o. lateral surface of ilium, inferior to the origin of gluteus medius
- i. greater tochanter of femur, anterior surface
- a. abduction and medial rotation of thigh
-
piriformis
- o. anterior surface of sacrum
- i. greater trochanter of femur, anterior surface
- a. abducts thigh
-
iliacus
- o. iliac fossa, anterior surface of sacrum
- i. lesser trochanter of femur
- a. flexion of the thigh
-
psoas major
- o. bodies of vertebrae T12- L5 nerves
- i. lesser trochanter of femur
- a. flexion of the thigh
-
sartorius
- o. anterior surface iliac spine of ilium
- i. medial surface of tibia, near the knee joint
- a. flexion
-
rectus femoris
- o. anterior inferior iliac spine of ilium
- i. patella by the quadriceps tendon and tibial tuberosity by the patellar ligament
- a. extension of leg
-
vastus lateralis
- o. greater trochanter and lateral lip of linea aspera of femur
- i. patella by the quadriceps tendon and tibial tuberosity by the patellar ligament
- a. extension of leg
-
vastus medialis
- o. introchanteric line and medial lip of linea apera
- i. patella by hte quadriceps tendon and tibial tuberosity by the patellar ligament
- a. extension of leg
-
tensor fasciae latae
- o. anterior superior iliac spine of ilium
- i. iliotibial tract
- a. flexes, abducts, and medially rotates thigh
-
pectineus
- o. superior ramus of pubic bone
- i. pectineal line of femur
- a. adduction and flexion of thigh
-
adductor longus
- o. body of pubic bone
- i. linea aspera of femur
- a. adduction and flexion of thigh
-
gracilis
- o. body and inferior ramus of pubic bone
- i. medial surface of tibia, near the knee joint
- a. adduction of thigh
-
semitendinosus
- o. ischial tuberosity of ischium
- i. posterior surface of medial condyle of tibia
- a. extension of thigh
-
peroneus brevis
- o. lateral surface of fibula
- i. fifth metatarsal
- a. eversion of the foot
-
gastrocnemius
- o. lateral head: lateral condyle of femur
- medial head: popliteal surface of femur, just superior to medial condyle
- i. calcaneus by the calcaneal (achilles) tendon
-
soleus
- o. head of fibula, posterior surface of fibula, medial aspect of tibia
- i. calcaneus by the calcaneal (achilles) heel
- a. plantar flexion of foot
-
coracobrachialis
- o-coracoid process of scapula
- i-medial surface of humerus
- a-flexion and abduction of arm
-
triceps brachii
- o-long head: inferior margin of glenoid fossa of scapulalateral head: posterior surface of humerusmedial head: posterior surface of humerus, inferior to origin of lateral head
- i-olecranon process of ulna
- a-extension of forearm
-
pronator teres
- o-medial epicondyle of humerus, coronoid process of ulna
- i-lateral surface of radius
- a-pronation n flexion of da forearm
-
flexor carpi radialis
- o-medial epicondyle of humerus
- i-base of metacarpal of da second digit
- a-flexion and abduction of da wrist
-
palmaris longus
- o-medial epicondyle of humerus
- i-flexor retinaculum, palmar aponeurosis
- a-flexion of wrist
-
flexor carpi ulnaris
- o-medial epicondyle of humerus, olecranon process of radius
- i-medial carpal bones, metacarpal of fifth digit
- a-flexion n abduction of da wrist
-
flexor pollicis longus
- o-anterior surface of radius, interosseous membrane
- i-distal phalanx of thumb
- a-flexion of da wrist and da thumb
-
brachioradialis
- o-lateral supracondylar ridge of humerus
- i-lateral surface of distal radius
- a-flexion of forearm
-
extensor carpi radialis longus
- o-lateral supracondylar ridge of humerus
- i-metacarpal of da second digit
- a-extension n abduction of da wrist
-
extensor carpi radialis brevis
- o-lateral epicondyle of humerus
- i-metacarpal of third digit
- a-extension and abduction of the wrist
-
extensor digitorum
- o-lateral epicondyle of humerus
- i-extensor expansions of medual four digits
- a-extension of wrist and fingers
-
extensor carpi ulnaris
- o-lateral epicondyle of humerus, posterior surface of ulna
- i-metacarpal of the fifth digit
- a-extension and adduction of da wrist
-
anconeus
- o-lateral epicondyle of humerus
- i-olecranon process of ulna
- a-very weak extension of da forearm
-
supinator
- o-lateral epicondyle of humerus, proximal ulna
- i-posterior, lateral, and anterior surfaces of proximal radius
- a-supination of da forearm
-
abductor pollicis longus
- o-posterior surfaces of radius and ulna, interosseous membrane
- i-metacarpal of thumb
- a-abducts and extends thumb
-
tibialis anterior
- o-lateral condyle and lateral surface of tibia, interosseous
- i-medial cuneiform bone and first metatarsal
- a-dorsiflexion and inversion of da foot
-
extensor digitorum longus
- o-lateral condyle of tibia, medial surface of fibula, interosseous membrane
- i-middle and distal phalanges of digits 2-5
- a-dorsiflexion of da foot, extension of da toes
-
peroneus longus
- o-head and lateral suface of fibula
- i-first metatarsal and medial cuneiform
- a-eversion of da foot
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