A&P Origin, Insertion, Action

Masseter- Origin

Masseter- Origin

Zygomatic Bone and Arch

Masseter- Insertion

Ramus and Angle of mandible

Masseter- Action

Close jaw/ elevate mandible

Temporalis- Origin

Temporal Fossa

Temporalis- Insertion

Coronoid Process (mandible)

Temporalis- Action

Close Jaw/ Elevate mandible

Sternocleidomastoid- Origin

Manubrium (sternum) and medial clavicle

Sternocleidomastoid- Insertion

Mastoid process (temporal bone)

Sternocleidomastoid- Action

neck flexion, rotate skull to opposite shoulder

Quadratus Lumborum- Origin

iliac crest and lumbar fascia

Quadratus lumborum- Insertion

TP of lumbar vertebrae

Quadratus Lumborum- Action

extension and lateral flexion of vertebral column

Erector spinae (iliocostalis, longissimus, spinalis)- Action

extend spine

iliocostalis

most lateral

Longissimus

intermediate

Spinalis

most medial

Rectus Abdominis-Origin

Pubic crest and symphysis

Rectus Abdominis- Insertion

Xiphoid process and ribs 5-7 (costal cartilage)

REctus Abdominis- Action

flex and rotate vertebral column

Obliques (external and internal)- Action

flex and rotate vertebral column

Transverse Abdominis- Action *deepest muscle of abdominal wall, horizontal fibers

compress abdominal contents

Diaphragm- Action

flattens during respiration

External Intercostals-Action

elevate rib cage/ inspiration

Internal intercostals- Action

depress rib cage/ expiration

Pectoralis Major- Origin

medial clavicle, sternum, ribs 1-7 (cartilage)

Pectoralis Major- Insertion

Intertubercular sulcus of humerus

Pectoralis Major- Action

Shoulder flexion and adduction

"Serratus Anterior ""boxer's muscle""- Action"

Abduct scapula (protraction), stabilize scapula against rib cage

Rhomboids (major and minor)- Origin

SP C7-T5

Rhomboids- Insertion

Medial border of scapula

Rhomboids- Action

Adduct scapula (retraction)

Trapezius (upper, middle, lower)- Origin

external occipital protuberance

Trapezius- Insertion

lateral clavicle, acromion, spine of scapula

Trapezius- Action

Adduct and elevate scapula

Latissimus Dorsi- origin

SP T7-12, inferior 4 ribs, iliac crest

Latissimus Dorsi- Insertion

intertubercular sulcus of humerus

Latissimus Dorsi- action

Extension and Adduction of Humerus

Deltoid (anterior, middle, posterior)- Origin

Lateral Clavicle, Acromion, Spine of Scapula

Deltoid- Insertion

Deltoid Tuberosity

Deltoid (anterior)- Action

Shoulder flexion

Deltoid (middle)- Action

Shoulder abduction

Deltoid (posterior)- Action

Shoulder extension

"Rotator cuff ""SITS"" muscles"

Supraspinatus, Infraspinatus, Teres Minor, Subscapularis

Supraspinatus- Origin

Supraspinous Fossa (scapula)

Supraspinatus-Action

Initiate abduction of humerus

Infraspinatus- Origin

Infraspinous Fossa

Infraspinatus-Action

lateral rotation of humerus

Teres Minor- Origin

lateral border of scapula

Teres Minor- Action

lateral rotation of humerus

Insertion of all "SIT"

greater tubercle of humerus

Subscapularis- Origin

subscapular fossa

Subscapularis- Action

medial rotation of humerus and adduction

Subscapularis- Insertion

Lesser tubercle of humerus

Triceps Brachii (long, medial, lateral head)-Origin

infraglenoid tubercle (below glenoid of humerus)

Triceps Brachii (long, medial, lateral head)-Origin

posterior humerus (radial groove)

Triceps Brachii (ALL)- Insertion

Olecranon of ulna

Triceps Brachii (ALL)- Action

elbow extension

Biceps brachii (long head)- Origin

supraglenoid tubercle

Biceps Brachii (short head)- Origin

coracoid process

Biceps Brachii ( long and short head)- Insertion

radial tuberosity (proximal radius)

Biceps Brachii- Action

elbow flexion

Brachialis and Brachioradialis -Action

elbow flexion

Pronator Teres (superficial)- Origin

medial epicondyle (humerus)

Pronator Teres- Action

pronation

Flexor Carpi Radialis- Origin

medial epicondyle (humerus)

Flexor Carpi Radialis- Insertion

ventral surface of 2nd metacarpal (thumb side)

Flexor Capri Radialis- Action

Wrist Flexion

Flexor Digitorum Superficialis- Origin

medial epicondyle (humerus)

Flexor digitorum superficialis - Insertion

ventral surface of middle phalanges (2-5)

Flexor Digitorum Superficialis- Action

flex phalanges

Extensor Carpi Radialis Longus- Origin

lateral epicondyle (humerus)

Extensor Carpi Radialis Longus- Action

wrist extension

Extensor Carpi Radialis Longus- Insertion

dorsal surface of 2nd metacarpal (thumb side)

Extensor Digitorum- Origin

lateral epicondyle (humerus)

Extensor Digitorum- Insertion

Dorsal surface of middle phalanges (2-5)

Extensor Digitorum- Action

Extend Phalanges

Iliopsoas also does what

flex trunk at hip

Iliopsoas (psoas major)- Origin

lumbar vertebrae

Iliopsoas (iliacus)- origin

iliac fossa

Iliopsoas (both)- Insertion

Lesser trochanter

Sartorius- Origin

Anterior Superior Iliac Spine

Sartorius- Insertion

proximal medial tibia

Rectus Femoris- Origin

Anterior Inferior Iliac Spine

Rectus Femoris- Insertion

Tibial tuberosity via patellar tendon

Gluteus Maximus- Origin

iliac crest, posterior iliac fossa

Gluteus Maximus- insertion

Gluteal tuberosity on femur

Hamstrings (semi group and biceps femoris)- origin

Ischial tuberosity

Hamstrings (Semitendinosus)- Insertion

proximal medial tibia via pes anserine tendon

Hamstrings (semimembranosus)- Insertion

medial condyle of tibia

Hamstrings (Biceps Femoris [long head])- Insertion

Fibula head

TFL- Origin

Anterior Superior Iliac Spine, iliac crest (anterior)

TFL- Insertion

IT band

Hip Abductors

Gluteus medius, minimus, Sartorius

Pectineus-Origin

superior pubic ramus

Pectineus- Insertion

Proximal Medial femur to linea tendon

Gracilis- Origin

inferior pubic ramus

Gracilis-Insertion (HIP Adductor)

Proximal medial tibia via pes anserine tendon

Adductor Magnus, Brevis, Longus- origin

Ischial ramus and inferior pubic ramus, body of pubis

Adductor Magnus, Brevis, Longus- Insertion

Adductor tubercle

Lateral Hip Rotators

Piriformis, Superior gemellus, Inferior Gemellus, Obturator Internus