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Muscles: Origins, Insertions, Actions, Nerve Supply, & Arterial Supply

Muscles: Origins, Insertions, Actions, Nerve Supply, & Arterial Supply. BY 115/115L. Basic Vocabulary. Agonist – performing the action Antagonist – opposite of the agonist/performs opposite action Synergist – assists the agonist

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Muscles: Origins, Insertions, Actions, Nerve Supply, & Arterial Supply

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  1. Muscles: Origins, Insertions, Actions, Nerve Supply, & Arterial Supply BY 115/115L

  2. Basic Vocabulary • Agonist – performing the action • Antagonist – opposite of the agonist/performs opposite action • Synergist – assists the agonist • Insertion – more distal and lateral/joint where primary movement takes place • Origin – more proximal attached end/where muscle “originates”

  3. Tendon – muscle to bone • Ligament – bone to bone Tendon of quadriceps femoris Patellar Ligament

  4. Aponeurosis – muscle to muscle PalmarAponuerosis

  5. Blood Supply – Lower Extremities Superior & Inferior Gluteal Arteries Femoral & Obturator Arteries Deep Femoral Artery Popliteal Artery Branches Posterior Anterior

  6. Nerve Supply – Lower Extremities Gluteal Nerves Superior = Gluteus med., Gluteus min.& Tensor Fascia Latae Inferior = Gluteus Max. Femoral Nerve Tibial branch of sciatic nerve Obturator Nerve Deep Fibular Nerve Posterior Anterior

  7. Actions • A muscle that crosses on the anterior side of a joint produces flexion. • A muscle that crosses on the posterior side of a joint produces extension. • A muscle that crosses on the lateral side of a joint produces abduction. • A muscle that crosses on the medial side of a joint produces adduction.

  8. Videos Tibialis Anterior FibularisLongus

  9. Videos Hip Rotation Muscles Hip Movement Gluteus Maximus Gluteus Medius

  10. Videos Pectineus Medial Thigh Muscles

  11. Videos Biceps Femoris Semitendinosus Semimembranosus

  12. Videos Rectus Femoris VastusLateralis VastusMedialis VastusIntermedius Sartorius Tensor Fascia Latae

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