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Gender Differences of the Pelvis: Why would this be?

Gender Differences of the Pelvis: Why would this be?. More upright, narrow Inlet of true pelvis, thicker bones, larger acetabulum, pubic arch = 60-70°. Tilted forward, broad Inlet of true pelvis (birth canal), lighter/thinner bones, smaller acetabulum, pubic arch = 80-90°. Typical Male.

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Gender Differences of the Pelvis: Why would this be?

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  1. Gender Differences of the Pelvis: Why would this be? More upright, narrow Inlet of true pelvis, thicker bones, larger acetabulum, pubic arch = 60-70° Tilted forward, broad Inlet of true pelvis (birth canal), lighter/thinner bones, smaller acetabulum, pubic arch = 80-90° Typical Male Typical Female Figure 5.24c

  2. You DO have to know these bones… Figure 5.7

  3. …I’m getting dizzy… Figure 5.9

  4. …that’s anatomy for you…it is possible! Figure 5.11

  5. Orbits – what 7 bones? Figure 7.9b

  6. Nasal Cavity Frontal Ethmoid Nasal Sphenoid Inferior Nasal Concha Palatine Maxilla Figure 7.10a

  7. Nasal Septum Figure 7.10b

  8. Paranasal Sinuses – hollow portions of skull Lighten the skull Amplify voice Continuity w/ respiratory tract leads to sinus infections What 5 bones?

  9. The Hyoid Bone • Only bone with no bone articulations • Moveable base for tongue • Aids in swallowing and speech

  10. The Fetal Skull is not fully formed • Fontanels—fibrous membranes connecting the cranial bones (a.k.a. soft spots) • Allows brain growth, slight compression during birth • Convert to bone by 24 months

  11. The Vertebral Column Vertebrae named by location separated by intervertebral discs 7 cervical (neck) 12 thoracic (articulate w/ ribs) 5 lumbar (lower back) 7am breakfast, 12 noon lunch, 5pm dinner? Sacrum = 5 fused vertebrae Coccyx = 3-5 fused vertebrae

  12. The Vertebral Column – changes shape between birth and walking Secondary curvatures of cervical and lumbar regions develop after birth Secondary curves Primary curves Lordosis = exaggerated secondary lumbar curvature (often seen in pregnant women) Kyphosis = exaggerated primary thoracic curvature (humpback) Scoliosis = abnormal lateral curvatures

  13. Vertebral Column: Ligaments Figure 7.14a

  14. Vertebral Column: Intervertebral Discs Figure 7.14b

  15. Atlas (1st Cervical Vertebrae) Atlas = C1, Articulation with occipital condyle = “YES” Figure 5.18a

  16. Figure 5.9

  17. Axis (Second Cervical Vertebrae) Axis = C2, Dens articulation with Atlas = “NO”; also prevents hyperextension of neck a.k.a. odontoid process Figure 5.18a

  18. Cervical vertebrae have small openings for important nerves and vessels of the head Only in Cervical Vertebrae Present in all vertebrae Figure 5.18b

  19. Thoracic vertebrae have extra facets for rib articulation(look like giraffes?) Figure 5.18c

  20. Lumbar Vertebrae have massive bodies to bear weight (Look like moose?) Figure 5.18d

  21. The Bony Thorax protects major organs Consists of three parts • Sternum • Ribs • True ribs (pairs 1–7) • False ribs (pairs 8–12) • Floating ribs (pairs 11–12) • Thoracic vertebrae

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