| Term 
 | Definition 
 
        | Origin: zygomatic arch 
 Insertion: mandibular angle and mandibular ramus
 
 Action: elevates mandible
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: temporal fossa of temporal bone 
 Insertion: coronoid process of mandible
 
 Action: elevates mandible, retracts mandible
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: manubrium of sternum and medial clavicle 
 Insertion: mastoid process of temporal bone
 
 Action: flexes head, rotates head laterally
 |  | 
        |  | 
        
        | Term 
 
        | ANTERIOR/MIDDLE/POSTERIOR SCALENES |  | Definition 
 
        | Origin: transverse processes of cervical vertebrae 
 Insertion: anterior surface of ribs 1-2
 
 Action: elevates ribs 1-2, flexes neck, rotates neck
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: ribs 3-5 
 Insertion: coracoid process of scapula
 
 Action: depresses scapula, downwardly rotates scapula
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: inferior border of ribs 
 Insertion: superior border of ribs
 
 Action: elevates rib cage
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: superior border of ribs 
 Insertion: inferior border of ribs
 
 Action: depresses rib cage
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: ribs 1-8 
 Insertion: vertebral border of scapula
 
 Action: rotates inferior angle of scapula laterally
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: ribs 5-12 
 Insertion: linea alba, pubic crest, pubic tubercle, iliac crest
 
 Action: flexes vertebral column, compresses abdominal wall
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lumbar fascia, iliac crest, inguinal ligament 
 Insertion: linea alba, pubic crest
 
 Action: flexes vertebral column, compresses abdominal wall
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: pubic crest, pubic symphysis 
 Insertion: xiphoid process, ribs 5-7
 
 Action: flexes lumbar region of vertebral column, rotates lumbar region of vertebral column
 |  | 
        |  | 
        
        | Term 
 
        | LONG HEAD OF BICEPS BRACHII |  | Definition 
 
        | Origin: supraglenoid tubercle of scapula 
 Insertion: radial tuberosity of radius
 
 Action: flexes forearm at elbow, supinates forarm
 |  | 
        |  | 
        
        | Term 
 
        | SHORT HEAD OF BICEPS BRACHII |  | Definition 
 
        | Origin: coracoid process of scapula 
 Insertion: radial tuberosity of radius
 
 Action: flexes forearm at elbow, supinates forearm
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: anterior humerus 
 Insertion: coronoid process of ulna
 
 Action: flexes forearm at elbow
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: coracoid process of scapula 
 Insertion: medial humerus
 
 Action: flexes arm at shoulder, adducts arm
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lateral supracondylar ridge of humerus 
 Insertion: styloid process of radius
 
 Action: flexes forearm at elbow, stabilizes elbow during flexion & extension
 |  | 
        |  | 
        
        | Term 
 
        | EXTENSOR CARPI RADIALIS LONGUS |  | Definition 
 
        | Origin: lateral supracondylar ridge of humerus 
 Insertion: 2nd metacarpal
 
 Action: extends hand at wrist, abducts hand
 |  | 
        |  | 
        
        | Term 
 
        | EXTENSOR CARPI RADIALIS BREVIS |  | Definition 
 
        | Origin: lateral epicondyle of humerus 
 Insertion: 3rd metacarpal
 
 Action: extends hand at wrist, abducts hand
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lateral epicondyle of humerus 
 Insertion: distal phalanges of 2nd to 5th digit
 
 Action: extends distal interphalangeal joints, extends hand at wrist
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lateral epicondyle of humerus, posterior ulna 
 Insertion: 5th metacarpal
 
 Action: extends hand at wrist, adducts hand
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lateral epicondyle of humerus, proximal ulna 
 Insertion: proximal end of radius
 
 Action: supinates forearm
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: posterior radius, posterior ulna, interosseous membrane 
 Insertion: trapezium, 1st metacarpal
 
 Action: abducts pollex
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: posterior radius, posterior ulna, interosseous membrane 
 Insertion: proximal phalanx of pollex
 
 Action: extends 1st metacarpalphalangeal joint
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin:posterior radius, posterior ulna, interosseous membrane 
 Insertion: distal phalanx of pollex
 
 Actoin: extends 1st interphalangeal joint
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: posterior ulna, interosseous membrane 
 Insertion: distal phalanx of 2nd digit
 
 Actoin: extends 2nd distal interphalangeal joint
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lateral epicondyle of humerus 
 Insertion: distal phalanx of 5th digit
 
 Action: extends 5th distal interphalangeal joint
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: iliac fossa, ala of the sacrum, transverse processes of T12-L5 
 Insertion: lesser trochanter of femur
 
 Action: flexes thigh at hip, flexes vertebral column
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: anterior superior iliac spine 
 Insertion: medial tibia
 
 Action: flexes thigh at hip, rotates thigh laterally, flexes leg at knee, rotates knee medially
 |  | 
        |  | 
        
        | Term 
 
        | QUADRICEPS FEMORIS: RECTUS FEMORIS |  | Definition 
 
        | Origin: anterior inferior iliac spine 
 Insertion: patella and tibial tuberosity via tendon of quadriceps femoris & patellar ligament
 
 Action: extends leg at knee, flexes thigh at hip
 |  | 
        |  | 
        
        | Term 
 
        | QUADRICEPS FEMORIS: VASTUS LATERALIS |  | Definition 
 
        | Origin: greater trochanter of femur, intertrochanteric line, linea aspera of femur 
 Insertion: patella and tibial tuberosity via tendon of quadriceps femoris and patellar ligament
 
 Action: extends leg at knee, stabilizes knee
 |  | 
        |  | 
        
        | Term 
 
        | QUADRICEPS FEMORIS: VASTUS MEDIALIS |  | Definition 
 
        | Origin: linea aspera of femur, intertrochanteric line 
 Insertion: patella and tibial tuberosity via tendon of quadriceps femoris & patellar ligament
 
 Action: extends leg at knee, stabilizes patella
 |  | 
        |  | 
        
        | Term 
 
        | QUADRICEPS FEMORIS: VASTUS INTERMEDIUS |  | Definition 
 
        | Origin: shaft of femur 
 Insertion: patella and tibial tuberosity via tendon of quadriceps femoris and patellar ligament
 
 Action: extends leg at knee
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: superior ramus of pubis 
 Insertion: linea aspera of femur
 
 Action: adducts thigh, flexes thigh at hip, rotates thigh medially
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: anterior superior iliac spine, iliac crest 
 Insertion: iliotibial tract
 
 Action: flexes thigh at hip, abducts thigh, rotates thigh medially
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: inferior ramus of the pubis, body of the pubis 
 Insertion: medial surface of tibia
 
 Action: adducts thigh, flexes leg at knee, rotates leg medially
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: pubis-near pubic symphysis 
 Insertion: linea aspera of femur
 
 Action: adducts thigh, flexes thigh at hip, rotates thigh medially
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: body of pubis, inferior ramus of pubis 
 Insertion: linea aspera of femur
 
 Action: adducst thigh, rotates thigh medially
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: inferior ramus of pubis, ischial ramus, ischial tuberosity 
 Insertion: linea aspera of femur
 
 Action: adducts thigh, rotates thigh laterally, flexes thigh at hip
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: occipital bone, spinous processes of C7-T12 
 Insertion: lateral 1/3 of clavicle, spine of scapula, acromion process of scapula
 
 Action: elevates scapula, depresses scapula, rotates scapula, adducts scapula
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lateral 1/3 of clavicle, spine of scapula, acromion process of scapula 
 Insertion: deltoid tuberosity of humerus
 
 Action: abducts arm, flexes arm at shoulder, rotates arm medially, extends arm at shoulder, rotates arm laterally
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: spinous processes of T7-T12, ribs 9-12, iliac crest, inferior angle of scapula 
 Insertion: intertubercular groove of humerus
 
 Action: extends arm at shoulder, adducts arm, rotates arm medially
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: sternal end of clavicle, ribs 1-6 
 Insertion: greater tubercle of humerus
 
 Action: flexes arm shoulder, rotates arm medially, adducts arm
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: transverse processes of C1-C4 
 Insertion: vertebral border of scapula
 
 Action: elevates scapula, downwardly rotates scapula
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: spinous processes of T2-T5 
 Insertion: vertebral border of scapula
 
 Action: adducts scapula, downwardly rotates scapula
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: spinous processes of C7-T1 
 Insertion: vertebral border of scapula
 
 Action: adducts scapula, downwardly rotates scapula
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: supraspinous fossa of the scapula 
 Insertion: greater tubercle of humerus
 
 Action: abducts arm
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: infraspinous fossa of scapula 
 Insertion: greater tubercle of humerus
 
 Action: rotates arm laterally
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: inferior angle of scapula 
 Insertion: lesser tubercle of humerus
 
 Action: adducts arm, extends arm at shoulder, rotates arm medially
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lateral border of scapula 
 Insertion: greater tubercle of humerus
 
 Action: rotates arm laterally
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: supscapular fossa of scapula 
 Insertion: lesser tubercle of humerus
 
 Action: rotates arm medially
 |  | 
        |  | 
        
        | Term 
 
        | LONG HEAD OF TRICEPS BRACHII |  | Definition 
 
        | Origin: infraglenoid tubercle of scapula 
 Insertion: olecranon process of ulna
 
 Action: extends forearm at elbow
 |  | 
        |  | 
        
        | Term 
 
        | LATERAL HEAD OF BICEPS BRACHII |  | Definition 
 
        | Origin: posterior humerus 
 Insertion: olecranon process of ulna
 
 Action: extends arm at elbow
 |  | 
        |  | 
        
        | Term 
 
        | MEDIAL HEAD OF TRICEPS BRACHII |  | Definition 
 
        | Origin: posterior humerus 
 Insertion: olecranon process of ulna
 
 Action: extends forearm at elbow
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: medial epicondyle of humerus 
 Insertion: lateral radius
 
 Action: pronates forearm
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: medial epicondyle of humerus 
 Insertion: 2nd and 3rd metacarpals
 
 Action: flexes hand at wrist, abducts hand
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: medial epicondyle of humerus 
 Insertion: palmar aponeurosis
 
 Action: flexes hand at wrist
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: medial epicondyle of humerus, olecranon process of ulna, shaft of ulna 
 Insertion: pisiform, hamate, 5th metacarpal
 
 Action: flexes hand at wrist, adducts hand
 |  | 
        |  | 
        
        | Term 
 
        | FLEXOR DIGITORUM SUPERFICIALIS |  | Definition 
 
        | Origin: medial epicondyle of humerus, coronoid process of ulna, shaft of radius 
 Insertion: middle phalanges of 2nd to 5th digit
 
 Action: flexes hand at wrist, flexes proximal interphalangeal joints
 |  | 
        |  | 
        
        | Term 
 
        | FLEXOR DIGITORUM PROFUNDUS |  | Definition 
 
        | Origin: ulna and interosseous membrane 
 Insertion: distal phalanges of 2nd to 5th digit
 
 Action: flexes distal interphalangeal joints
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: anterior radius and interosseous membrane 
 Insertion: distal phalanx of pollux
 
 Action: flexes 1st interphalangeal joint
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: distal and andterior ulna 
 Insertion: distal and anterior radius
 
 Action: pronates forearm
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: scaphoid, trapezium, flexor retinaculum 
 Insertion: proximal phalanx of pollex
 
 Action: abducts pollex
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: trapezium, flexor retinaculum 
 Insertion: 1st metacarpal
 
 Action: opposes pollex
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: posterior ilium, sacrum, coccyx 
 Insertion: iliotibial tract, gluteal tuberosity of femur
 
 Action: extends thigh at hip, rotates thigh laterally, abducts thigh
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lateral surface of ilium 
 Insertion: greater trochanter of femur
 
 Action: abducts thigh, rotates thigh medially
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lateral surface of ilium 
 Insertion: greater trochanter of femur
 
 Action: abducts thigh, rotates thigh medially
 |  | 
        |  | 
        
        | Term 
 
        | LONG HEAD OF BICEPS FEMORIS |  | Definition 
 
        | Origin: ischial tuberosity 
 Insertion: head of fibula, lateral condyle of tibia
 
 Action: flexes leg at knee, rotates leg laterally
 |  | 
        |  | 
        
        | Term 
 
        | SHORT HEAD OF BICEPS FEMORIS |  | Definition 
 
        | Origin: linea aspera 
 Insertion: head of fibula, lateral conyle of tibia
 
 Action: flexes leg at knee, rotates leg laterally
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lateral condyle of tibia, interosseous membrane 
 Insertion: medial cuneiform, 1st metatarsal
 
 Action: dorsiflexes foot at ankle, inverts foot
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: anterior fibula, interosseous membrane 
 Insertion: distal phalanx of hallux
 
 Action: dorsiflexes foot at ankle, extends 1st interphalangeal joint
 |  | 
        |  | 
        
        | Term 
 
        | EXTENSOR DIGITORUM LONGUS |  | Definition 
 
        | Origin: lateral condyle of tibia, proximal fibula, interosseous membrane 
 Insertion: middle and distal phalanges of 2nd-5th digits
 
 Action: extends 2nd-5th distal interphalangeal joints
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: anterior fibula, interosseous membrane 
 Insertion: 5th metatarsal
 
 Action: dorsiflexes foot at ankle, everts foot
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: head of fibula 
 Insertion: medial cuneiform, 1st metatarsal
 
 Action: plantar flexes foot at ankle, everts foot
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: distal fibula 
 Insertion: 5th metatarsal
 
 Action: plantar flexes foot at ankle, everts foot
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: lateral condyle of femur, medial condyle of femur 
 Insertion: calcaneus
 
 Action: plantar flexes foot at ankle
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: proximal tibia, proximal fibula, interosseous membrane 
 Insertion: calcaneus
 
 Action: plantar flexes foot at ankle
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: posterior tibia 
 Insertion: distal phalanges of 2nd-5th digits
 
 Action: plantar flexes foot at ankle, inverts foot, flexes 2nd-5th distal interphalangeal joints
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: middle shaft of fibula, interosseous membrane 
 Insertion: distal phalanx of hallux
 
 Action: plantar flexes foot at ankle, inverts foot, flexes all joints of hallux
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: proximal tibia, proximal fibula, interosseous membrane 
 Insertion: navicular bone, 2nd-4th metatarsal
 
 Action: plantar flexes foot at ankle, inverts foot
 |  | 
        |  | 
        
        | Term 
 
        | ERECTOR SPINAE: ILIOCOSTALIS |  | Definition 
 
        | Origin: iliac crest, ribs 3-12 
 Insertion: inferior border of ribs, transverse processes of C4-C6
 
 Action: extends vertebral column, laterally flexes vertebral column
 |  | 
        |  | 
        
        | Term 
 
        | ERECTOR SPINE: LONGISSIMUS |  | Definition 
 
        | Origin: transverse processes of C4-L5 
 Insertion: mastoid process of temporal bone
 
 Action: extends vertebral column, laterally flexes vertebral column
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: spinous processes of T7-L3 
 Insertion: spinous processes of C4-T6
 
 Action: extends vertebral column
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: spinous process of C6-T7 
 Insertion: mastoid process of temporal bone, occipital bone
 
 Action: extends or huperextends vertebral column
 |  | 
        |  | 
        
        | Term 
 | Definition 
 
        | Origin: transverse processes of C7-T12 
 Insertion: occipital bone
 
 Action: extends vertebral column
 |  | 
        |  |