Insertions/Origins of Head/Neck/Trunk/Shoulder

Trapezius

Origin: Acromion and spinous process of scapula; lateral third of clavicle Insertion: Occipital bone; ligamentum nuchae, spines of C7 and all thoracic vertebrae

Pectoralis Minor

Origin: Anterior Surface of ribs 3-5, near their costal cartilages Insertion: Coracoid process of scapula

corrugator supercilii

Origin: Arch of frontal bone above nasal bone Insertion: Skin of eyebrow

orbicularis oris

Origin: Arises indirectly from the maxilla and mandible; fibers blended with fibers of other muscles associated with lips Insertion: Encircles mouth: inserts into muscle and skin at angles of mouth zygomaticus major/minor Origin: Zygomatic Bone Insertion: Skin and muscle at corner of mouth

depressor labii inferioris

Origin: Body of mandible lateral to its midline Insertion: Skin and muscle of lower lip

depressor labii inferioris

Origin: Body of mandible lateral to its midline Insertion: Skin and muscle of lower lip lateral pterygoid Origin: Greater wing of sphenoid bone Insertion: Mandibular condyle

levator anguli oris

Origin: Canine fossa of maxilla Insertion: Angle of mouth, blending with fibers of zygomaticus major, depressor anguli oris, and orbicularis oris muscles

Pectoralis Major

Origin: Clavicle, sternum, cartilage of ribs 1-6, aponeurosis of external oblique muscle Insertion: Lateral lip of the intertubercular groove of the humerus

platysma

Origin: Fascia of chest (over pectoral muscles) and deltoid Insertion: Lower margin of mandible, skin, and muscle at corner of mouth

Latissimus dorsi

Origin: Floor of intertubercular sulcus of humerus Insertion: Indirect attachment to spinous process of lower six thoracic vertebrae, lumbar vertebrae, last three ribs, and iliac crest

orbicularis oculi

Origin: Frontal and maxillary bones and ligaments around orbit Insertion: Encircles orbit and insert in tissue of eyelid

epicranius frontalis

Origin: Frontal belly - Galea Aponeurotica Insertion: Frontal belly - skin of eyebrows and root of nose

Quadratus lumborum

Origin: Iliac crest and lumbar fascia. Insertion: Inferior border of rib 12; transverse processes of lumbar vertebrae.

Erector spinae

Origin: Iliac crest, transverse processes of lumbar, thoracic, and cervical vertebrae, and/or ribs 3-6 depending on specific part. Insertion: Ribs and transverse processes of vertebrae about 6 segments above origin; longissimus also inserts into mastoid process.

External Intercostals

Origin: Inferior border of rib above Insertion: Superior border of rib below

Diaphragm

Origin: Inferior border of rib and sternum, costal cartilages of last 6 ribs and lumbar vertebrae. Insertion: Central tendon.

geniohyoid

Origin: Inferior mental spine on inner surface of mandible Insertion: Anterior surface of body of hyoid bone

levator palpebrae superioris

Origin: Inferior surface of lesser wing of sphenoid Insertion: Tarsal plate of upper eyelid

Infraspinatus

Origin: Infraspinous fossa of the scapula Insertion: Greater tubercle of the humerus

Subclavius

Origin: Junction of the first rib and its costal cartilage Insertion: Groove on the inferior surface of clavicle

Serratus Anterior

Origin: Lateral aspect of ribs 1-8 Insertion: Vertebral border of anterior surface of scapula

risorius

Origin: Lateral fascia over masseter muscle and parotid gland Insertion: Skin at angle of the mouth

Teres Minor

Origin: Lateral magin of the scapula Insertion: Greater tubercle of the humerus

Deltoid

Origin: Lateral ½ of clavicle, acromion and spine of scapula Insertion: Deltoid tuberosity of humerus

Subscpularis

Origin: Lesser tubercle of humerus Insertion: Subscapular fossa of scapula

Splenius

Origin: Ligamentum nichae and spinous prcesses of C7-T6. Insertion: Mastoid process, occipital bone, and transverse processes of C2-C4.

Transverse abdominis

Origin: Linea alba and pubic crest Insertion: Inguinal ligament; iliac crest, cartilages of the last five ribs, and lumbar fascia

External oblique

Origin: Linea alba; pubic crest and tubercles; and iliac crest Insertion: Anterior surface of the last eight ribs

Internal oblique

Origin: Linea alba; pubic crest; and costal cartilages of last three ribs Insertion: Lumbar fascia; iliac crest; and inguinal ligament

digastric

Origin: Lower margin of mandible (anterior belly) and mastoid process (posterior belly) Insertion: By a connective tissue loop to hyoid bone

mentalis

Origin: Mandible below incisors Insertion: Skin of chin

sternohyoid

Origin: Manubrium and medial end of clavicle Insertion: Lower margin of body of hyoid bone

sternocleidomastoid

Origin: Manubrium of sternum and medial portion of clavicle Insertion: Mastoid process of tempral bone and superior nuchal line of occipital

mylohyoid

Origin: Medial surface of mandible Insertion: Hyoid bone and median raphe

buccinators

Origin: Molar region of maxilla and mandible Insertion: Orbicularis oris

depressor anguli oris

Origin: Oblique line of mandible Insertion: Skin and muscle at angle of mouth below insertion of zygomaticus

epicranius occipitalis

Origin: Occipital and temporal bones Insertion: Galea Aponeurotica

Teres Major

Origin: Posterior surface at the inferior angle of the scapula Insertion: Intertubercular sulcus of the humerus

sternothyroid

Origin: Posterior surface of manubrium Insertion: Thyroid cartilage of larynx

medial pterygoid

Origin: Sphenoid, palatine, and maxillary bones Insertion: Medial surface of mendible, near its angle

Rhomboideus Major

Origin: Spinous processes of C7 and T1-T5 Insertion: Medial border of the scapula

stylohyoid

Origin: Styloid process of temporal Insertion: Hyoid bone

Internal Intercostals

Origin: Superior border of rib below Insertion: Inferior border of rib above

omohyoid

Origin: Superior surface of scapula Insertion: Hyoid bone; inferior border

Supraspinatus

Origin: Supraspinous fossa of the scapula Insertion: Greater tubercle of the humerus

temporalis

Origin: Temporal fossa Insertion: Coronoid process of mandible

thyrohyoid

Origin: Thyroid cartilage Insertion: Hyoid bone

Levator Scapulae

Origin: Transverse processes of C1-C4 Insertion: Medial border of the scapula superior to the spine

Semispinalis

Origin: Transverse processes of C7-T12. Insertion: Occipital bone and spinous process of cervical vertebrae and T1-T4

scalenes

Origin: Transverse processes of cervical vertebrae Insertion: Anterolaterally on ribs 1-2

Rectus abdominis

Origin: Xiphoid process and costal cartilage of ribs 5-7 Insertion: Pubic crest and symphysis

masseter

Origin: Zygomatic arch and maxilla Insertion: Angle and ramus of mandible

levator labii superioris

Origin: Zygomatic bone and infraorbital margin of maxilla Insertion: Skin and muscle of upper lip and border of nostril

Rhomboideus minor

Origin: spinous process of C7 and T1-T5. Insertion: Medial border of the scapula