Muscles origin/insertion

Tibialis Anterior

O: Lateral Condyle and Proximal shaft of Tibia

I: Metatarsal 1 & Medial Cuneiform

A: dorsiflex & invert foot

Extensor Digitorum Longus

O: Anterior fibula and lateral condyle of tibia

I: Phalange 2-5

A: Dorsiflex foot and extend digits 2-5

Fibularis Longus

O: Head & Proximal 2/3 shaft of fibula

I: Metatarsal 1 & Medial Cuneiform 

A: Evert & Plantarflex foot

Fibularis Brevis

O: Mid-lateral shaft of fibula

I: Metatarsal 5

A: Evert & Plantarflex foot

Gastrocnemius

O: Posterior medial & lateral condyle of femur

I: calcaneus via calcaneal tendon

A: plantarflex foot and flex leg

Soleus

O: head and proximal shaft of fibula; posterior tibia

I: Calcaneus via calcaneal tendon

A: plantarflex foot

Sartorius

O: anterior superior iliac spine

I: medial side of tibial tuberosity

A: flex and laterally rotate thigh

Gracilis

O: Pubis Bone

I: proximal, medial tibia

A: adduct and flex thigh

Adductor Brevis

O: Pubis Bone

I: proximal 1/3 linea aspera

A: adduct and flex thigh 

Adductor Longus

O: Pubis Bone

I: Linea Aspera

A: adduct and flex thigh

Adductor Magnus

O: Pubis Bone

I: linea aspera and adductor tubercle

A: adduct and flex thigh

Pectineus

O: Pubis Bone

I: pectineal line

A: adduct and flex thigh 

Iliopsoas

O: transverse process & bodies of T12-L5 & iliac fossa

I: lesser trochanter

A: flex thigh

Gluteus Maximus

O: Iliac crest, sacrum, coccyx

I: linea aspera, gluteal tuberosity, iliotibial band

A: extend and laterally rotate thigh 

Tensor Fasciae Latae

Anterior Iliac crest & anterior superior iliac spine

I: lateral condyle of tibia via iliotibial band

A: abduct and medially rotate thigh

Rectus Femoris

O: Anterior inferior iliac spine

I: tibial tubersoity via patellar tendon/ligament

A: extend leg and flex thigh 

Vastus lateralis

O: Greater trochanter

I: tibial tuberosity via patellar tendon/ligament

A: extend leg

Vastus Medialis

O: intertrochlear line

I: tibial tuberosity via patellar tendon/ligament

A: extend leg

Vastus intermedius

O: anterior, proximal femur
I: tibial tuberosity via patellar tendon/ligament

A: extend leg

Semitendenosus

O: ischial tuberosity

I: proximal medial tibia

A: flex leg and extend thigh 

Semimembranosus

O: ischial tuberosity

I: Posterior medial tibial condyle

A: flex leg and extend thigh 

Biceps Femoris

O: ischail tuberosity (long head); linea aspera (short head)
I: fibular head

A: flex leg (both heads) extend thigh(long head only)

Gluteus Medius

O: lateral posterior surface of iliac
I: greater trochanter

A: abduct and medially rotate thigh

Gluteus Minimus

O: lateral posterior surface of iliac

I: greater trochanter

A: abduct and medially rotate thigh

Pronator Teres 

O: medial epicondyle of humerus & coronoid process of ulna

I: lateral radial surface

A: pronate forearm 

Extensor Carpi Radialis Longus

O: Lateral epicondyle of humerus

I: Metacarpal 2 
A: extend and abduct wrist

Extensor Carpi Radialis Brevis 

O: lateral epicondyle of wrist

I: Metacarpal 3

A: extend and abduct wrist

Flexor Carpi Radialis 

O: Medial epicondyle of humerus

I: metacarpal 2-3

A: Flex wrist and abduct wrist

Flexor Carpi Ulnaris

O: Medial epicondyle of humerus

I: Pisiform, Hamate, metacarpal 5

A: flex wrist and adduct wrist

Palmaris Longus

O: Medial epicondyle of humerus

I: Palmar aponeurosis

A: flex wrist

Flexor Digitorum Superficialis 

O: medial epicondyle of humerus and coronoid process of ulna

I: middle phalange 2-5

A: flex wrist and digits 2-5

(deep to flexor group)

Brachialis

O: distal anterior surface of humerus

I: coronoid process of ulna

A: flex arm

(deep to biceps brachii)

Epicranius-Frontalis

O: Epicranial aponeurosis

I: skin of forehead and eyebrows

A: elevate eyebrows and wrinkle forehead

Epicranius-Occipitalis 

O: occipital bone

I: epicranial aponeurosis

A: retract scalp

Orbicularis Oculi

O: medial wall of orbit

I: skin around eyelid

A: close eyelids

Orbicularis Oris

O: mandible and maxille

I: skin around mouth

A: close and compress lips

Buccinator

O: mandible and maxillae

I: orbicularis oris
A: compress cheeks

Zygomatic Major

O: zygomatic Bone

I: skin at superolateral edges (corners) of mouth 

A: elevate corners of mouth

Masseter

O: zygomatic arch

I: ramus and angle of mandible
A: elevate mandible

Temporalis

O: superior/inferior temporal lines

I: coronoid process of mandible

A: elevate mandible

Sternocleidomastoid

O: manubrium of sternal end of clavicle

I: mastoid process (temporal bone)
A: rotation and lateral flexion of head/ flexion of head

Brachioradialis

O: lateral supracondyla ridge of humerus

I: styloid process of radius

A: flex forearm

Extensor Digitorum 

O: lateral epicondyle fo humerus 

I: digits 2-5

A: extend wrist and digits 2-5

Extensor digiti minimi

O: lateral epicondyle of humerus

I: digit 5

A: extend wrist and digit 5

Extensor Carpi Ulnaris 

O: lateral epicondyle of humerus

I: metacarpal 5

A: extend and adduct wrist

Biceps Brachii

O: supraglenoid tubercle(long head) Coracoid process of scapula (short head)

I: radial tuberosity

A: flex and supinate forearm; weakly flex wrist

Coracobrachialis

O: coracoid process of scapula

I: middle medial shaft of humerus

A: flex and adduct arm

Triceps Brachii (L,L,M heads)

O: Infraglenoid tubercle (Long)
O: Proximal poster humerus (lat.)

O: Distal posterior humerus (Medial)

I: olecrannon of ulna

A: all heads extend forearm, long head weakly extend and adduct arm

Pectoralis Major

O: Sternum, clavicle, 2-6 rib costal cartilage

I: intertubercular groove

A: flex, adduct, anteriorly medially rotate arm

Serratus Anterior

O: anterior ribs 1-8

I: Anterior medial border of scapula
A: superiorly rotate and protract scapula

Pectoralis Minor

O: ribs 3-5

I: coracoid process of scapula

A: protract and depress scapula

Latissimus Dorsi

O: T7-L5 spinous processes, ribs 8-12, iliac crest

I: intertubercular groove

A: extend, adduct, posteriorly medially rotate arm

Transverse Abdominis

O: Inguinal ligament and iliac crest

I: linea alba

A: trunk lateral flexion, bilateral trunk compression

(deepest of abdominal muscles)

External Oblique

O: inferior surface of ribs 5-12

I: linea alba and iliac crest

A: trunk rotation and lateral flexion, trunk flexion and compression

(second furthest layer out)

Internal Oblique

O: Inguinal ligament and iliac crest

I: linea alba, inferior surface and costal cartilageof ribs 8-12

A: trunk rotation and lateral flexion, trunk flexion and compression

(2nd deepest)

Rectus Abdominis

O: pubic symphysis

I: xiphoid process of sternum

A: trunk flexion and compression

Subscapularis

O: subscapular fossa

I: lesser tubercle

A: posteriorly medially rotate arm

(anterior side of scapula)

Deltoid

O: acromion processs and spine of scapula, acromial end of clavicle

I: deltoid tuberosity

A: flex, abduct, extend arm

Trapezius

O: occipital bone, C1-T12 spinous processes

I: clavicle, acromion process and spine of scapula

A: superiorly rotate, elevate, depress, retract scapula

Infraspinatus

O: Infraspinous fossa

I: greater tubercle

A: adduct and laterally rotate arm 

(posterior side of scapula)

Teres Minor

O: Superior, dorsal, lateral scapula

I: greater tubercle

A: adduct and laterally rotate arm

Teres Major

O: inferior border and angle of scapula

I: lesser tubercle and intertubercular groove

A: extend, adduct, posteriorly medially rotate arm

Supraspinatus

O: supraspinous fossa

I: greater tubercle

A: abduct arm

Rhomboid Major

O: T2-T5 spinous processes

I: medial border scapular, inferior to spine

A: retract, elevate, inferiorly rotate scapula
(deep to trapezius)

Rhomboid Minor

O: C7-T1 spinous processes,

I: medial border of scapula, superior to spine

A: retract, elevate, inferiorly rotate scapula

(deep to trapezius)

Levator Scapula

O: C1-C4 transverse processes

I: superior medial border of scapula

A: elevate and inferiorly rotate scapula