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Biology 223 Human Anatomy for Biology Majors Week 8; Lecture 1; Monday Dr. Stuart S. Sumida PowerPoint Presentation
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Biology 223 Human Anatomy for Biology Majors Week 8; Lecture 1; Monday Dr. Stuart S. Sumida

Biology 223 Human Anatomy for Biology Majors Week 8; Lecture 1; Monday Dr. Stuart S. Sumida

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Biology 223 Human Anatomy for Biology Majors Week 8; Lecture 1; Monday Dr. Stuart S. Sumida

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  1. Biology 223 Human Anatomy for Biology Majors Week 8; Lecture 1; Monday Dr. Stuart S. Sumida Overview of Structure of the Adult Skull

  2. The developing skull has three component origins: • Condrocranium (base of skull / braincase) • Dermatocranium (flat bones of skull) • Splanchnocranium (bones derived from gill arch elements)

  3. Mode of Germ Layer • Formation Origin • Condrocranium Endochondral Mesoderm • Dermatocranium Dermal Neural Crest • Splanchnocranium Endochondral Neural Crest

  4. CHONDROCRANIUM: Bones of the base of the skull. • Most major cranial nerves escape the skull through these. • Endochondral • Mesodermal • Include: ethmoid, sphenoid (part), occipital (part) right and left temporal (parts).

  5. Flat bones of skull: DERMATOCRANIUM (These and others.)

  6. Gill slit bones: become SPLANCHNOCRANIUM

  7. Mandible (Lower Jaw)

  8. Skull – Anterior View

  9. Anterior Inferior Frontal

  10. Ethmoid superior lateral

  11. Bones of the Orbit

  12. Skull – Lateral View

  13. Maxilla: Lateral View

  14. External Internal Parietal

  15. Temporal Internal External

  16. Neonatal Temporal Bone

  17. Skull – Superior View

  18. Skull – Posterior View

  19. Inferior Internal Occipital

  20. Skull – Inferior View

  21. Hard Palate

  22. Infratemporal Region

  23. Skull – Internal View

  24. Sphenoid Occipital

  25. Major Ligaments Near Jaw Joint

  26. Major Ligaments Near Jaw Joint: Stylomandibular Sphenomandibular

  27. Bones of the Basicranium Ethmoid Sphenoid Temporal Occipital

  28. Anterior Posterior Sphenoid

  29. Dermal Roofing Bones Nasals Frontal Parietals

  30. Dermal Facial Bones Maxilla Zygomatic Lacrimal

  31. Maxilla: Lateral View

  32. Bones of the Orbit

  33. Dermal Palatal Bones Maxilla Palatine Vomer

  34. Hard Palate

  35. Bones of Splanchnopleure Sphenoid Greater Wing Temporal Styloid Process Middle Ear Ossicles