Muscles Origin Insertion Action

Terms in this set (60)

Origin:iliac crest
Insertion:mastoid process on skull
Action:intervertebral extension

Origin:superior thoracic vertebrae
Insertion:occipital bone
Action:rotate head

Origin:posterior surface of occipital bone
Insertion:spine of scapula
Action:scapular elevation

Rhomboid major and minor

Origin:spinous processes of vertebrae T2-T5
Insertion:medial border of scapula
Action:scapular elevatoin

Levator scapulae

Origin:transverse processes of vertebrae C1-C4
Insertion:medial border of scapula near superior angle
Action:scapular elevation

Serratus anterior

Origin:external surfaces of ribs 1-8
Insertion:medial border of scapula
Action:elevates ribs

Pectoralis minor

Origin:external surfaces of ribs 3-5
Insertion:coracoid process of scapula
Action:elevates ribs

Origin:spine of scapula
Insertion:deltoid tuberosity of humerus
Action:arm abduction

Origin:supraspinous fossa of scapula
Insertion:greater tubercle of humerus
Action:arm abduction

Origin:infraspinous fossa of scapula
Insertion:greater tubercle of humerus
Action:arm lateral rotation

Origin:lateral border of scapula
Insertion:greater tubercle of humerus
Action:arm extension

Origin:near inferior angle of scapula
Insertion:intertubercular groove
Action:arm extension

Latissimus dorsi

Origin:iliac crest
Insertion:intertubercular groove of humerus
Action:arm extension

Origin:subscapular fossa of scapula
Insertion:lesser tubercle of humerus
Action:arm adduction

Pectoralis major

Origin:sternum
Insertion:intertubercular groove on humerus
Action:shoulder adduction

Origin:coracoid process of scapula
Insertion:radial tuberosity of radius
Action:arm flexion

Coracobrachialis

Origin:coracoid process of scapula
Insertion:medial surface of humerus
Action:arm flexion

Origin:anterior surface of humerus
Insertion:coronoid process of ulna
Action:forearm flexion

Triceps brachii

Origin:posterior surface of humerus
Insertion:olecranon process of ulna
Action:arm extension

Flexor carpi radialis

Origin:medial epicondyle of humerus
Insertion:base of metacarpal of the second digit
Action:hand flexion

Flexor carpi ulnaris

Origin:medial epicondyle of humerus
Insertion:medial carpal bones
Action:hand flexion

Pronator quadratus

Origin:anterior surface of distal ulna
Insertion:anterior surface of distal radius
Action:forearm pronation

Brachioradialis

Origin:lateral supracondylar ridge of humerus
Insertion:lateral surface of distal radius
Action:forearm flexion

Gluteus maximus

Origin:lateral surface of ilium
Insertion:gluteal tuberosity of femur
Action:thigh extension

Origin:lateral surface of ilium
Insertion:greater trochanter of femur
Action:though abduction

Origin:iliac fossa
Insertion:lesser trochanter of femur
Action:thigh flexion

Tensor fasciae latae

Origin:anterior superior iliac spine of ilium
Insertion:iliotibial tract
Action:thigh flexion

Origin:anterior inferior iliac spine of ilium
Insertion:tibial tuberosity
Action:thigh flexion

Vastus lateralis

Origin:greater trochanter of femur
Insertion:tibial tuberosity
Action:leg extension

Vastus medialis

Origin:linea aspera
Insertion:tibial tuberosity
Action:leg extension

Vastus intermedius

Origin:anterior and lateral surfaces of femoral shaft
Insertion:tibial tuberosity
Action:leg extension

Origin:anterior superior iliac spine of ilium
Insertion:medial surface of tibia
Action:thigh flexion

Adductor longus

Origin:body of pubis
Insertion:linea aspera of femur
Action:thigh flexion

Origin:body of pubis
Insertion:medial surface of tibia
Action:leg flexion

Origin:superior ramus of pubis
Insertion:pectineal line of femur
Action:thigh flexion

Origin:ischial tuberosity of ischium
Insertion:lateral side of head of fibula
Action:thigh extension

Semimembranosus

Origin:ischial tuberosity of ischium
Insertion:medial condyle of tibia
Action:thigh extension

Origin:ischial tuberosity of ischium
Insertion:medial surface of tibia
Action:thigh extension

Tibialis anterior

Origin: Interosseous membrane
Insertion: first metatarsal
Action:dorsiflexion

Extensor digitorum longus

Origin: interosseous membrane
Insertion: distal phalanges of digits 2-5
Action:dorsiflexion

Peroneus (fibularis) longus

Origin:head of fibula
Insertion:first metatarsal
Action:plantar flexion

Origin:lateral condyle of femur
Insertion:calcaneus by achilles tendon
Action:leg flexion

Origin:head of fibula
Insertion:calcaneus by achilles tendon
Action:plantar flexion

Internal intercostals

Origin:superior border of inferior rib
Insertion:inferior border of superior rib
Action:depresses ribs during expiration

Rectus abdominis

Origin:pubic symphysis
Insertion:xiphoid process
Action:forced expiration

External abdominal oblique

Origin:external surfaces of interior eight ribs
Insertion:pubic crest
Action:forced expiration

Internal abdominal oblique

Origin:iliac crest
Insertion:pubic crest
Action: trunk rotation

Transversus abdominis

Origin:iliac crest
Insertion:pubic crest
Action:compress abdomen

Orbicularis oculi

Origin:medial aspect of bony orbit
Insertion:skin around eyelids
Action:close eye

Orbicularis oris

Origin:mandible
Insertion:lips
Action:speech

Origin:mandible
Insertion:blends with fibers of orbicularis oris
Action:blowing

Zygomaticus major

Origin:zygomatic bone
Insertion:angle of mouth
Action:smile

Origin:temporal bone
Insertion:coronoid process of mandible
Action:retract mandible

Frontalis (Epicranius- frontal belly)

Origin:epicranial aponeurosis
Insertion:skin of eyebrow
Action:raise eyebrows

Origin:zygomatic arch
Insertion:lateral surface of mandibular ramus
Action:protrude mandible

Origin:manubrium
Insertion:hyoid bone
Action:depress hyoid during swallowing

Origin:styloid process
Insertion:hyoid bone
Action:retracts hyoid

Sternocleidomastoid

Origin:manubrium
Insertion:mastoid process
Action:flex neck

Origin:posterior belly from mastoid process
Insertion:hyoid bone
Action:elevate hyoid

Origin:inferior margin of mandible at the chin
Insertion:hyoid bone
Action:elevate hyoid during swallowing

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