Chapter11 musclespart1marieb

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Chapter11 musclespart1marieb

  1. 1. Ch 11, Muscles of the Body Part 1: The Axial Musculature <ul><li>Consists of the </li></ul><ul><ul><li>Head and Neck </li></ul></ul><ul><ul><li>Spine </li></ul></ul><ul><ul><li>Ribs </li></ul></ul><ul><li>Know the Terms: </li></ul><ul><ul><li>Origin, Insertion, Action </li></ul></ul><ul><ul><li>Agonist (prime mover) and Antagonist </li></ul></ul><ul><ul><li>Synergist </li></ul></ul>
  2. 2. Muscle Arrangements
  3. 3. Some Nomenclature Aids <ul><li>Location, e.g., intercostal </li></ul><ul><li>Shape, e.g. deltoid </li></ul><ul><li>Size, e.g., gluteus maximus </li></ul><ul><li>Direction of fibers, e.g., rectus, oblique </li></ul><ul><li>Location of origin and/or insertion, e.g., sternocleidomastoid </li></ul><ul><ul><li>Number of origins, e.g., biceps brachii </li></ul></ul><ul><li>Action (flexor, extensor, etc.) </li></ul>Page 271 Superficial, big, important
  4. 4. Superficial muscles Fig 11-7 a and b
  5. 5. The Head (and face) orbicularis oculi orbicularis oris risorius platysma
  6. 6. Muscles of Mastication (chewing) Masseter Temporalis Buccinator
  7. 7. Tongue (glosso) and related muscles <ul><li>Genioglossus </li></ul><ul><ul><li>Inferior aspect of tongue </li></ul></ul><ul><li>Styloglossus </li></ul><ul><li>Hyoglossus </li></ul>Genio- = chin Glosso = tongue
  8. 8. Eye (Ch 16) <ul><li>Rectus muscles: </li></ul><ul><ul><li>Medial and Lateral </li></ul></ul><ul><ul><li>Superior and Inferior </li></ul></ul><ul><li>Oblique muscles </li></ul><ul><ul><li>Superior and Inferior </li></ul></ul><ul><ul><li>Note the trochlea </li></ul></ul><ul><li>Levator palpebrae superioris </li></ul>We’ll see these again, in Special Senses
  9. 9. The Neck <ul><li>Digastric </li></ul><ul><li>Sternocleidomastoid (two heads, or origins) </li></ul><ul><li>Suprahyoid Group </li></ul><ul><li>Infrahyoid Group </li></ul>
  10. 10. The Spine Trapezius Deltoid Infraspinatus Latissimus dorsi
  11. 11. More Spine Flap for breast reconstruction 1.  Pectoantebrachialis 2.  Pectoralis major 3.  Pectoralis minor 4.  Xiphihumeralis 5.  External Oblique 6.  Latissimus dorsi 7.  Epitrochlearis 8.  Clavobrachialis
  12. 12. The Neck & Spine: For posture <ul><li>erector spinae group: </li></ul><ul><ul><li>Longissimus </li></ul></ul><ul><ul><li>Iliocostalis </li></ul></ul><ul><ul><li>Spinalis </li></ul></ul>
  13. 13. Respiration <ul><li>Diaphragm </li></ul><ul><ul><li>Dome-shaped </li></ul></ul><ul><li>Intercostals </li></ul><ul><ul><li>External - for inspiration </li></ul></ul><ul><ul><li>Internal – for expiration </li></ul></ul>
  14. 14. The Abdominal Group <ul><li>Abdominal wall: </li></ul><ul><li>Rectus abdominis </li></ul><ul><li>Int. and ext. obliques </li></ul><ul><li>Transversus abdominis </li></ul><ul><li>Tendinous intersections </li></ul><ul><ul><li>(inscriptions, insertions) </li></ul></ul><ul><ul><li>The “six pack” </li></ul></ul><ul><li>Linea alba </li></ul><ul><li>Inguinal rings </li></ul>
  15. 15. The Abdominal Group
  16. 16. Pelvic Floor, female <ul><li>Pelvic Diaphragm </li></ul><ul><ul><li>Levator ani </li></ul></ul><ul><ul><li>Coccygeus </li></ul></ul><ul><li>External Urethral Sphincter </li></ul><ul><li>External Anal Sphincter </li></ul>
  17. 17. Pelvic Floor--Male

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