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Exercise 7

Exercise 7. Axial Skeleton. Portland Community College BI 231. Bone Landmarks. All bones possess distinctive landmarks that are designed for specific functions. Review table 7.1. Axial Skeleton. Skull Spine Thoracic Cage Hyoid bone. Supraorbital ridge. Frontal Bone. Frontal Bone.

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Exercise 7

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  1. Exercise 7 Axial Skeleton Portland Community College BI 231

  2. Bone Landmarks • All bones possess distinctive landmarks that are designed for specific functions. • Review table 7.1

  3. Axial Skeleton • Skull • Spine • Thoracic Cage • Hyoid bone

  4. Supraorbital ridge Frontal Bone Frontal Bone Frontal Bone

  5. Frontal Bone Frontal Sinus

  6. Parietal Bone Parietal Bone

  7. Parietal Bone Parietal Bone

  8. Temporal Bone Temporal Bone

  9. Temporal Bone External Acoustic Meatus Zygomatic Arch Mastoid Process Mandibular fossa Styloid Process

  10. Temporal Bone Carotid Canal Jugular Foramen

  11. Temporal Bone Temporal Bone Temporal Bone

  12. Occipital Bone Occipital Condyles Foramen Magnum External occipital protuberance

  13. Nuchal lines

  14. Occipital Bone

  15. Coronal Suture Parietal Bone Frontal Bone Between the Parietal bones and the Frontal Bone Temporal Bone Occipital Bone

  16. Squamous Suture Parietal Bone Frontal Bone Between the Parietal bone and the Temporal Bone Temporal Bone Occipital Bone

  17. Sagittal Suture Occipital Bone Between the Right and Left Parietal bones Parietal Bone (Right) Parietal Bone (Left) Frontal Bone

  18. Lambdoid Suture Parietal Bone Frontal Bone Between the Parietal bones and the Occipital Bone Temporal Bone Occipital Bone

  19. CraniumFloor Anterior Cranial Fossa Middle Cranial Fossa PosteriorCranial Fossa

  20. Sphenoid Bone Foramen lacerum Lesser Wing Greater Wing Sella Turcica Foramen rotundum Foramen ovale Foramen spinosum

  21. SphenoidBone Hypophyseal Fossa Dorsum Sella Petrous ridge Internal acoustic canal

  22. Sphenoid Bone Sphenoidal Sinus Pterygoid Process

  23. Sphenoid Bone Lesser Wing Greater Wing Pterygoid Process Lateral Pterygoid Plate Medial Pterygoid Plate

  24. Ethmoid Bone Crista Galli Perpendicular Plate

  25. Ethmoid Bone Middle NasalConchae Perpendicular Plate

  26. Ethmoid Bone Cristae Galli Cribriform Plate Perpendicular Plate

  27. Facial Bones Middle NasalConchae (Ethmoid) Inferior Nasal Conchae Perpendicular Plate (Ethmoid) Vomer

  28. Facial Bones

  29. Zygomatic Bone Temporal Process Zygomatic Arch

  30. Maxilla Hard Palate Infraorbital foramen Alveolar processes

  31. Palatine Bone Vomer

  32. Mandible Coronoid Process Mandibular Condyle Alveolar Process Ramus Angle Mental Foramen Body

  33. Mandible Mandibular Foramen Mylohyoid Line

  34. Orbit

  35. Openings • Foramen rotundum • Foramen lacerum • Foramen ovale • Jugular foramen • Internal acoustic canal • Hypoglossal canal

  36. Sinuses Ethmoid Air Cells Frontal Sphenoidal Maxillary

  37. Fetal SkullSuperior View

  38. Fetal Skull

  39. Wormian (Sutural) Bones Small islands of bone that fill gaps in sutures. Present in varying amounts

  40. Cervical Spine • 7 Vertebra • C1-C7 • Concave Posterior

  41. Thoracic Spine • 12 Vertebra • T1-T12 • Convex Posterior • Attach to the ribs

  42. Lumbar Spine • 5 Vertebra • L1-L5 • Concave Posterior

  43. Sacral Spine • 5 Fused Vertebra • “Sacrum”

  44. Coccyx • 4 Fused Vertebra

  45. Sacrum 5 Fused Vertebrae

  46. Sacrum Sacral Foramina

  47. Sacrum Sacral Promontory

  48. Typical structure of vertebra

  49. Intervertebral Foraminae

  50. Intervertebral Disk

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