Muscle Origins and Insertions

O: Epicranial aponeurosis

I: Skin of eyebrow and bridge of nose

Occipitofrontalis (frontal belly)

O: Superior nuchal line and adjacent region of mastoid portion of temporal bone

I: Epicranial aponeurosis

Occipitofrontalis (Occipital belly)

O: Along temporal lines of skull

I: Coronoid process of mandible

Temporalis

O: Medial margin of orbit

I: Skin around eyelids

Orbicularis Oculi

O: Zygomatic bone near zygomaticotemporal suture

I: Angle of mouth

Zygomaticus Major

O: Zygomatic bone posterior to the zygomaticomaxillary suture

I: Upper lip

Zygomaticus Minor

O: Alveolar processes of maxilla and mandible opposite of the molar teeth

I: Blends into fibers of orbiculairs oris

Buccinator

O: Zygomatic arch

I: Lateral surface and angle of mandibular ramus

Masseter

O: Maxilla and mandible

I: Lips

Orbicularis Oris

O: Fascia surrounding parotid salivary gland

I: Angle of mouth

Risorius

O: Incisive fossa of mandible

I: Skin of chin

Mentalis

O: Fascia of the superior thorax between cartilage of the second rib and acromion of scapula

I: Mandible and skin of cheek

Platysma

O: From inferior surface of mandible at chin

I: Hyoid bone

Digastric (anterior belly)

O: From mastoid region of temporal bone

I: Hyoid bone

Digastric (posterior belly)

O: Superior border of the scapula near scapular notch

I: Hyoid bone

Omohyoid

O: Clavicle and manubrium

I: Hyoid bone

Sternohyoid

O: Dorsal surface of manubrium and first costal cartilage 

I: Thyroid cartilage of larynx

Sternothyroid

O: Attaches to sternal end of clavicle

I: Mastoid region of skull and lateral portion of superior nuchal line

Sternocleidomastoid (clavicular head)

O: Attaches to manubrium

I: Mastoid region of skull and lateral portion of superior nuchal line

Sternocleidomastoid (sternal head)

Medial to Lateral Erector Spinae Group

Iliocostalis, Longissimus, Spinalis (I Like Spaghetti) 

O: Spinous process and ligaments connecting inferior cervical and superior thoracic vertebrae

I: Mastoid process, occipital bone of skull, superior cervical vertebrae

Splenius Group

O: Iliac crest and iliolumbar ligament

I: Last rib and transverse process of lumbar vertebrae

Quadratus Lumborum [Spinal Flexors]

O: Transverse and costal processes of cervical vertebrae C2-C7

I: Superior surface of first two ribs

Scalenes [Cervical Region]

O: Inferior border of each rib

I: Superior border of the more inferior rib

External Intercostals [Thoracic Region]

O: Superior border of each rib

I: Inferior border of the more superior rib

Internal Intercostals [Thoracic Region]

O: External and inferior borders of ribs 5-12

I: External oblique aponeuroses extending to linea alba and iliac crest

External Oblique [Abdominal Region]

O: Thoracolumbar fascia and iliac crest

I: Inferior surfaces of ribs 9-12, costal cartilages of 8-10, linea alba, and pubis

Internal Oblique [Abdominal Region]

O: Cartilages of ribs 6-12, iliac crest, and thoracolumbar fascia

I: linea alba and pubis

Transverse Abdominis [Abdominal Region]

O: Superior surface of pubis around symphysis

I: Inferior surfaces of cartilages (ribs 5-7) and xiphoid process of sternum

Rectus Abdominis [Abdominal Region]

O: Transverse processes of first four cervical vertebrae

I: Vertebral border of scapula near superior angle

Levator Scapulae

O: Anterior surfaces and superior margins of ribs 3-5 and fascia covering the associated external intercostal muscles

I: Coracoid process of scapula

Pectoralis Minor

O: Spinous processes of superior thoracic vertebrae

I: Vertebral border of scapula from spine to inferior angle

Rhomboid Major

O: Spinous processes of vertebrae C7-T1

I: Vertebral border of scapula

Rhomboid Minor

O: Anterior and superior margins of ribs 1-8 or 1-9

I: anterior surface of vertebral border of scapua

Serratus Anterior

O: First rib

I: Clavicle (inferior border)

Subclavius

O: Occipital bone, ligamentum nuchae, and spinous processes of thoracic vertebrae

I: Clavicle and scapula (acromion and scapular spine)

Trapezius

O: Coracoid process

I: Medial margin of shaft of humerus

Coracobrachialis

O: Clavicle and scapula

I: Deltoid tuberosity of humerus

Deltoid

O: Supraspinous fossa of scapula

I: Greater tubercle of humerus

Supraspinatus

O: Infraspinous fossa of scapula

I: Greater tubercle of humerus

Infraspinatus

O: Inferior angle of scapula

I: Medial lip of intertubercular sulcus of humerus

Teres Major

O: Lateral border of scapula

I: Greater tubercle of humerus

Teres Minor

O: Spinous processes of inferior thoracic and all lumbar vertebrae, ribs 8-12, and thoracolumbar fascia

I: Floor of intertubercular sulcus of the humerus

Latissimus Dorsi

O: Cartilages of ribs 2-6, body of sternum, and inferior, medial portion of clavicle

I: Crest of greater tubercle and later lip of intertubercular sulcus of humerus

Pectoralis Major

O: Short head from coracoid process; long head from supraglenoid tubercle (both scapula)

I: Radial tuberosity

Biceps Brachii

O: Anterior, distal surface of humerus

I: Ulnar tuberosity

Brachialis

O: Ridge superior to the lateral epicondyle of humerus

I: Lateral aspect of styloid process of radius

Brachioradialis

O: Posterior surface of lateral humerus

I: Lateral margin of olecranon and ulnar shaft

Aconeus

O: Medial epicondyle of humerus and coronoid process of ulna

I: Middle of lateral surface of radius

Pronator Teres

O: Medial epicondyle of humerus

I: Palmar aponerusosis and flexor retinaculum

Palmaris Longus

O: Lateral supracondylar ridge of humerus

I: Base of second metacarpal bone

Extensor Carpi Radialis Longus

O: Proximal dorsal surfaces of ulna and radius

I: Lateral margin of first metacarpal bone

Abductor Pollicis Longus

O: Lateral epicondyle of humerus

I: Posterior surfaces of the phalanges, digits 2-5

Extensor Digitorum

O: Posterior surface of ulna and interosseous membrane

I: Posterior surface of proximal phalanx of index finger, with tendon of extensor digitorum

Extensor Indicis

O: Via extensor tendon to lateral epicondyle of humerus and from intermuscular septa

I: Posterior surface of proximal phalanx of little finger

Extensor Digit Minimi

O: Medial epicondyle of humerus; adjacent anterior surfaces of ulna and radius

I: To bases of middle phalanges of digits 2-5

Flexor Digitorum Superficialis

O: Medial and posterior surfaces of ulna, medial surfaces of coronoid process, and interosseous membrane

I: Bases of distal phalanges of digits 2-5

Flexor Digitorum Profundus

O: Iliac crest, posterior gluteal line, and lateral surface of ilium; sacrum, coccyx, and thoracolumbar fascia

I: Ilitobial tract and gluteal tuberosity of femur

Gluteus Maximus

O: Anterior iliac crest, lateral surface of ilium between posterior and anterior gluteal lines

I: Greater trochanter of femur

Gluteus Medius

O: Lateral surface of ilium between inferior and anterior gluteal lines

I: Greater trochanter of femur

Gluteus Minimus

O: Inferior ramus of pubis

I: Linea aspera of femur

Adductor Brevis

O: Inferior remus of pubis, anterior to adductor brevis

I: Linea aspera of femur

Adductor Longus

O: Inferior ramus of pubis, posterior to adductor brevis and ischial tuberosity

I: Linea aspera and adductor tubercle of femur

Adductor Magnus

O: Superior ramus of pubis

I: Pectineal line inferior to lesser trochanter of femur

Pectineus

O: Inferior ramus of pubis

I: Medial surface of tibia, inferior to medial condyle

Gracilis

O: Iliac fossa

I: Femur distal to lesser trochanter; tendon fused with that of psoas major

Iliacus

O: Anterior surfaces and transverse processes of vertebrae (T12-L5)

I: Lesser trochanter in company with iliacus

Psoas Major

O: Ischial tuberosity and linea aspera of femur

I: Head of fibula, lateral condyle of tibia

Biceps Femoris

O: Ischial tuberosity

I: Posterior surface of medial condyle of tibia

Semimembranosus

O: Ischial tuberosity

I: Proximal, medial surface of tibia near insertion of gracilis

Semitendinosus

O: Anterior superior iliac spine

I: Medial; surface of tibia near tibial tuberosity

Sartorius

O: Anterior inferior iliac spine and superior acetabular rim of ilium

I: Tibial tuberosity via quadriceps tendon, patella, and patellar ligament

Rectus Femoris

O: Anterior and inferior to greater trochanter of femur and along linea aspera

I: Tibial tuberosity via quadriceps tendon, patella, and patellar ligament

Vastus Lateralis

O: Entire length of linea aspera of femur

I: Tibial tuberosity via quadriceps tendon, patella, and patellar ligament

Vastus Medius

O: Lateral condyle and proximal shaft of tibia

I: Base of first metatarsal bone and medial cuneiform

Tibial Anterior

O: Femoral condyles

I: Calcaneus via calcaneal tendon

Gastrocneumius

O: Head and proximal shaft of fibula

I:  Base of firs metatarsal bone and medial cuneiform

Fibularis Longus

O: Lateral supracondylar ridge

I: Posterior portion of calcaneus

Plantaris

O: Head and proximal shaft of fibula and adjacent posteromedial shaft of tibia

I: Calcaneus via calcaneal tendon

Soleus