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Origin, Insertion, and Action (OIA) of Appendicular Muscles

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Terms in this set (29)

  • Origin: Clavicle, acromion, and spine of scapula. Insertion: Deltoid tuberosity of humerus. Action: Abducts, flexes, and extends the arm.

    Deltoid

  • Action: Flexes elbow and supinates forearm.

    Biceps Brachii

  • Action: Extends the elbow.

    Triceps Brachii

  • Action: Extends, adducts, and medially rotates the arm.

    Teres Major

  • Action: Abducts the arm.

    Supraspinatus

  • Action: Medially rotates the arm.

    Subscapularis

  • Action: Flexes the elbow.

    Brachialis

  • Action: Flexes the elbow.

    Brachioradialis

  • Action: Extends and laterally rotates the thigh.

    Gluteus Maximus

  • Origin: Anterior inferior iliac spine. Insertion: Tibial tuberosity via patellar ligament. Action: Extends the knee and flexes the thigh.

    Rectus Femoris

  • Origin: Ischial tuberosity and linea aspera. Insertion: Head of fibula. Action: Flexes the knee and extends the thigh.

    Biceps Femoris

  • Origin: Lateral condyle and proximal tibia. Insertion: Medial cuneiform and 1st metatarsal. Action: Dorsiflexes and inverts the foot.

    Tibialis Anterior

  • Origin: Medial and lateral condyles of femur. Insertion: Calcaneus via Achilles tendon. Action: Plantarflexes the foot and flexes the knee.

    Gastrocnemius

  • origin: in shoulder

    Infraspinatus

  • origin: medial epicondyle/ coronoid process. insertion: radius. action: pronation

    Pronator teres

  • origin: scapula. insertion: greater tubercle humerus. action: lateral rotation of shoulder

    teres minor

  • origin: pubis. insertion: linea aspera. action: adduction, flexion, medial rotation hip.

    adductor longus

  • action: adduct hip

    adductor magnus

  • action: abduct and medially rotate hip

    gluteus minimus

  • action: flex knee, adduct and medially rotate hip

    gracilis action: flex knee, adduct and medially rotate hip

  • origin: t 12 - l 5. insertion: lesser trochanter. Action: flex hip and lumbar region.

    psoas major

  • action: flex knee, flex and laterally rotate hip

    sartorius

  • action: flex knee, extend and medially rotate hip

    semimembranosus

  • action: flex knee. extend and medially rotate hip

    semitendinosus

  • action: plantar flex foot

    solus

  • origin: iliac crest. insertion: iliotibial tract. action: extend knee, lateral rotate leg, medial rotate thigh

    tensor fasciae latae

  • action: extend knee

    vastus lateralis

  • action: extend knee

    vastus intermedius

  • action: extend knee

    vastus medialis