Anatomy OIA's Flashcards

Terms Definitions
MASSETER
Origin: zygomatic archInsertion: mandibular angle and mandibular ramusAction: elevates mandible
TEMPORALIS
Origin: temporal fossa of temporal boneInsertion: coronoid process of mandibleAction: elevates mandible, retracts mandible
STERNOCLEIDOMASTOID
Origin: manubrium of sternum and medial clavicleInsertion: mastoid process of temporal boneAction: flexes head, rotates head laterally
ANTERIOR/MIDDLE/POSTERIOR SCALENES
Origin: transverse processes of cervical vertebraeInsertion: anterior surface of ribs 1-2Action: elevates ribs 1-2, flexes neck, rotates neck
PECTORALIS MINOR
Origin: ribs 3-5Insertion: coracoid process of scapulaAction: depresses scapula, downwardly rotates scapula
EXTERNAL INTERCOSTALS
Origin: inferior border of ribsInsertion: superior border of ribsAction: elevates rib cage
INTERNAL INTERCOSTALS
Origin: superior border of ribsInsertion: inferior border of ribsAction: depresses rib cage
SERRATUS ANTERIOR
Origin: ribs 1-8Insertion: vertebral border of scapulaAction: rotates inferior angle of scapula laterally
EXTERNAL OBLIQUE
Origin: ribs 5-12Insertion: linea alba, pubic crest, pubic tubercle, iliac crestAction: flexes vertebral column, compresses abdominal wall
INTERNAL OBLIQUE
Origin: lumbar fascia, iliac crest, inguinal ligamentInsertion: linea alba, pubic crestAction: flexes vertebral column, compresses abdominal wall
RECTUS ABDOMINIS
Origin: pubic crest, pubic symphysisInsertion: xiphoid process, ribs 5-7Action: flexes lumbar region of vertebral column, rotates lumbar region of vertebral column
LONG HEAD OF BICEPS BRACHII
Origin: supraglenoid tubercle of scapulaInsertion: radial tuberosity of radiusAction: flexes forearm at elbow, supinates forarm
SHORT HEAD OF BICEPS BRACHII
Origin: coracoid process of scapulaInsertion: radial tuberosity of radiusAction: flexes forearm at elbow, supinates forearm
BRACHIALIS
Origin: anterior humerusInsertion: coronoid process of ulnaAction: flexes forearm at elbow
CORACOBRACHIALIS
Origin: coracoid process of scapulaInsertion: medial humerusAction: flexes arm at shoulder, adducts arm
BRACHIORADIALIS
Origin: lateral supracondylar ridge of humerusInsertion: styloid process of radiusAction: flexes forearm at elbow, stabilizes elbow during flexion & extension
EXTENSOR CARPI RADIALIS LONGUS
Origin: lateral supracondylar ridge of humerusInsertion: 2nd metacarpalAction: extends hand at wrist, abducts hand
EXTENSOR CARPI RADIALIS BREVIS
Origin: lateral epicondyle of humerusInsertion: 3rd metacarpalAction: extends hand at wrist, abducts hand
EXTENSOR DIGITORUM
Origin: lateral epicondyle of humerusInsertion: distal phalanges of 2nd to 5th digitAction: extends distal interphalangeal joints, extends hand at wrist
EXTENSOR CARPI ULNARIS
Origin: lateral epicondyle of humerus, posterior ulnaInsertion: 5th metacarpalAction: extends hand at wrist, adducts hand
SUPINATOR
Origin: lateral epicondyle of humerus, proximal ulnaInsertion: proximal end of radiusAction: supinates forearm
ABDUCTOR POLLICIS LONGUS
Origin: posterior radius, posterior ulna, interosseous membraneInsertion: trapezium, 1st metacarpalAction: abducts pollex
EXTENSOR POLLICIS BREVIS
Origin: posterior radius, posterior ulna, interosseous membraneInsertion: proximal phalanx of pollexAction: extends 1st metacarpalphalangeal joint
EXTENSOR POLLICIS LONGUS
Origin:posterior radius, posterior ulna, interosseous membraneInsertion: distal phalanx of pollexActoin: extends 1st interphalangeal joint
EXTENSOR INDICIS
Origin: posterior ulna, interosseous membraneInsertion: distal phalanx of 2nd digitActoin: extends 2nd distal interphalangeal joint
EXTENSOR DIGITI MINIMI
Origin: lateral epicondyle of humerusInsertion: distal phalanx of 5th digitAction: extends 5th distal interphalangeal joint
ILIOPSOAS
Origin: iliac fossa, ala of the sacrum, transverse processes of T12-L5Insertion: lesser trochanter of femurAction: flexes thigh at hip, flexes vertebral column
SARTORIUS
Origin: anterior superior iliac spineInsertion: medial tibiaAction: flexes thigh at hip, rotates thigh laterally, flexes leg at knee, rotates knee medially
QUADRICEPS FEMORIS: RECTUS FEMORIS
Origin: anterior inferior iliac spineInsertion: patella and tibial tuberosity via tendon of quadriceps femoris & patellar ligamentAction: extends leg at knee, flexes thigh at hip
QUADRICEPS FEMORIS: VASTUS LATERALIS
Origin: greater trochanter of femur, intertrochanteric line, linea aspera of femurInsertion: patella and tibial tuberosity via tendon of quadriceps femoris and patellar ligamentAction: extends leg at knee, stabilizes knee
QUADRICEPS FEMORIS: VASTUS MEDIALIS
Origin: linea aspera of femur, intertrochanteric lineInsertion: patella and tibial tuberosity via tendon of quadriceps femoris & patellar ligamentAction: extends leg at knee, stabilizes patella
QUADRICEPS FEMORIS: VASTUS INTERMEDIUS
Origin: shaft of femurInsertion: patella and tibial tuberosity via tendon of quadriceps femoris and patellar ligamentAction: extends leg at knee
PECTINEUS
Origin: superior ramus of pubisInsertion: linea aspera of femurAction: adducts thigh, flexes thigh at hip, rotates thigh medially
TENSOR FASCIA LATAE
Origin: anterior superior iliac spine, iliac crestInsertion: iliotibial tractAction: flexes thigh at hip, abducts thigh, rotates thigh medially
GRACILIS
Origin: inferior ramus of the pubis, body of the pubisInsertion: medial surface of tibiaAction: adducts thigh, flexes leg at knee, rotates leg medially
ADDUCTOR LONGUS
Origin: pubis-near pubic symphysisInsertion: linea aspera of femurAction: adducts thigh, flexes thigh at hip, rotates thigh medially
ADDUCTOR BREVIS
Origin: body of pubis, inferior ramus of pubisInsertion: linea aspera of femurAction: adducst thigh, rotates thigh medially
ADDUCTOR MAGNUS
Origin: inferior ramus of pubis, ischial ramus, ischial tuberosityInsertion: linea aspera of femurAction: adducts thigh, rotates thigh laterally, flexes thigh at hip
TRAPEZIUS
Origin: occipital bone, spinous processes of C7-T12Insertion: lateral 1/3 of clavicle, spine of scapula, acromion process of scapulaAction: elevates scapula, depresses scapula, rotates scapula, adducts scapula
DELTOID
Origin: lateral 1/3 of clavicle, spine of scapula, acromion process of scapulaInsertion: deltoid tuberosity of humerusAction: abducts arm, flexes arm at shoulder, rotates arm medially, extends arm at shoulder, rotates arm laterally
LATISSIMUS DORSI
Origin: spinous processes of T7-T12, ribs 9-12, iliac crest, inferior angle of scapulaInsertion: intertubercular groove of humerusAction: extends arm at shoulder, adducts arm, rotates arm medially
PECTORALIS MAJOR
Origin: sternal end of clavicle, ribs 1-6Insertion: greater tubercle of humerusAction: flexes arm shoulder, rotates arm medially, adducts arm
LEVATOR SCAPULA
Origin: transverse processes of C1-C4Insertion: vertebral border of scapulaAction: elevates scapula, downwardly rotates scapula
RHOMBOID MAJOR
Origin: spinous processes of T2-T5Insertion: vertebral border of scapulaAction: adducts scapula, downwardly rotates scapula
RHOMBOID MINOR
Origin: spinous processes of C7-T1Insertion: vertebral border of scapulaAction: adducts scapula, downwardly rotates scapula
SUPRASPINATUS
Origin: supraspinous fossa of the scapulaInsertion: greater tubercle of humerusAction: abducts arm
INFRASPINATUS
Origin: infraspinous fossa of scapulaInsertion: greater tubercle of humerusAction: rotates arm laterally
TERES MAJOR
Origin: inferior angle of scapulaInsertion: lesser tubercle of humerusAction: adducts arm, extends arm at shoulder, rotates arm medially
TERES MINOR
Origin: lateral border of scapulaInsertion: greater tubercle of humerusAction: rotates arm laterally
SUBSCAPULARIS
Origin: supscapular fossa of scapulaInsertion: lesser tubercle of humerusAction: rotates arm medially
LONG HEAD OF TRICEPS BRACHII
Origin: infraglenoid tubercle of scapulaInsertion: olecranon process of ulnaAction: extends forearm at elbow
LATERAL HEAD OF BICEPS BRACHII
Origin: posterior humerusInsertion: olecranon process of ulnaAction: extends arm at elbow
MEDIAL HEAD OF TRICEPS BRACHII
Origin: posterior humerusInsertion: olecranon process of ulnaAction: extends forearm at elbow
PRONATOR TERES
Origin: medial epicondyle of humerusInsertion: lateral radiusAction: pronates forearm
FLEXOR CARPI RADIALIS
Origin: medial epicondyle of humerusInsertion: 2nd and 3rd metacarpalsAction: flexes hand at wrist, abducts hand
PALMARIS LONGUS
Origin: medial epicondyle of humerusInsertion: palmar aponeurosisAction: flexes hand at wrist
FLEXOR CARPI ULNARIS
Origin: medial epicondyle of humerus, olecranon process of ulna, shaft of ulnaInsertion: pisiform, hamate, 5th metacarpalAction: flexes hand at wrist, adducts hand
FLEXOR DIGITORUM SUPERFICIALIS
Origin: medial epicondyle of humerus, coronoid process of ulna, shaft of radiusInsertion: middle phalanges of 2nd to 5th digitAction: flexes hand at wrist, flexes proximal interphalangeal joints
FLEXOR DIGITORUM PROFUNDUS
Origin: ulna and interosseous membraneInsertion: distal phalanges of 2nd to 5th digitAction: flexes distal interphalangeal joints
FLEXOR POLLICIS LONGUS
Origin: anterior radius and interosseous membraneInsertion: distal phalanx of polluxAction: flexes 1st interphalangeal joint
PRONATOR QUADRATUS
Origin: distal and andterior ulnaInsertion: distal and anterior radiusAction: pronates forearm
ABDUCTOR POLLICIS BREVIS
Origin: scaphoid, trapezium, flexor retinaculumInsertion: proximal phalanx of pollexAction: abducts pollex
OPPONENS POLLICIS
Origin: trapezium, flexor retinaculumInsertion: 1st metacarpalAction: opposes pollex
GLUTEUS MAXIMUS
Origin: posterior ilium, sacrum, coccyxInsertion: iliotibial tract, gluteal tuberosity of femurAction: extends thigh at hip, rotates thigh laterally, abducts thigh
GLUTEUS MEDIUS
Origin: lateral surface of iliumInsertion: greater trochanter of femurAction: abducts thigh, rotates thigh medially
GLUTEUS MINIMUS
Origin: lateral surface of iliumInsertion: greater trochanter of femurAction: abducts thigh, rotates thigh medially
LONG HEAD OF BICEPS FEMORIS
Origin: ischial tuberosityInsertion: head of fibula, lateral condyle of tibiaAction: flexes leg at knee, rotates leg laterally
SHORT HEAD OF BICEPS FEMORIS
Origin: linea asperaInsertion: head of fibula, lateral conyle of tibiaAction: flexes leg at knee, rotates leg laterally
TIBIALIS ANTERIOR
Origin: lateral condyle of tibia, interosseous membraneInsertion: medial cuneiform, 1st metatarsalAction: dorsiflexes foot at ankle, inverts foot
EXTENSOR HALLUCIS LONGUS
Origin: anterior fibula, interosseous membraneInsertion: distal phalanx of halluxAction: dorsiflexes foot at ankle, extends 1st interphalangeal joint
EXTENSOR DIGITORUM LONGUS
Origin: lateral condyle of tibia, proximal fibula, interosseous membraneInsertion: middle and distal phalanges of 2nd-5th digitsAction: extends 2nd-5th distal interphalangeal joints
FIBULARIS TERTIUS
Origin: anterior fibula, interosseous membraneInsertion: 5th metatarsalAction: dorsiflexes foot at ankle, everts foot
FIBULARIS LONGUS
Origin: head of fibulaInsertion: medial cuneiform, 1st metatarsalAction: plantar flexes foot at ankle, everts foot
FIBULARIS BREVIS
Origin: distal fibulaInsertion: 5th metatarsalAction: plantar flexes foot at ankle, everts foot
GASTROCNEMIUS
Origin: lateral condyle of femur, medial condyle of femurInsertion: calcaneusAction: plantar flexes foot at ankle
SOLEUS
Origin: proximal tibia, proximal fibula, interosseous membraneInsertion: calcaneusAction: plantar flexes foot at ankle
FLEXOR DIGITORUM LONGUS
Origin: posterior tibiaInsertion: distal phalanges of 2nd-5th digitsAction: plantar flexes foot at ankle, inverts foot, flexes 2nd-5th distal interphalangeal joints
FLEXOR HALLUCIS LONGUS
Origin: middle shaft of fibula, interosseous membraneInsertion: distal phalanx of halluxAction: plantar flexes foot at ankle, inverts foot, flexes all joints of hallux
TIBIALIS POSTERIOR
Origin: proximal tibia, proximal fibula, interosseous membraneInsertion: navicular bone, 2nd-4th metatarsalAction: plantar flexes foot at ankle, inverts foot
ERECTOR SPINAE: ILIOCOSTALIS
Origin: iliac crest, ribs 3-12Insertion: inferior border of ribs, transverse processes of C4-C6Action: extends vertebral column, laterally flexes vertebral column
ERECTOR SPINE: LONGISSIMUS
Origin: transverse processes of C4-L5Insertion: mastoid process of temporal boneAction: extends vertebral column, laterally flexes vertebral column
ERECTOR SPINAE: SPINALIS
Origin: spinous processes of T7-L3Insertion: spinous processes of C4-T6Action: extends vertebral column
SPLENIUS CAPITIS
Origin: spinous process of C6-T7Insertion: mastoid process of temporal bone, occipital boneAction: extends or huperextends vertebral column
SEMISPINALIS CAPITIS
Origin: transverse processes of C7-T12Insertion: occipital boneAction: extends vertebral column
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