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Biology 323 Human Anatomy for Biology Majors Lecture 16 Dr. Stuart S. Sumida Overview of Structure of the Adult Skull.

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Presentation on theme: "Biology 323 Human Anatomy for Biology Majors Lecture 16 Dr. Stuart S. Sumida Overview of Structure of the Adult Skull."— Presentation transcript:

1 Biology 323 Human Anatomy for Biology Majors Lecture 16 Dr. Stuart S. Sumida Overview of Structure of the Adult Skull

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

5 Mode ofGerm Layer Formation Origin CondrocraniumEndochondralMesoderm Dermatocranium DermalNeural Crest SplanchnocraniumEndochondral Neural Crest

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

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8 orbit II/ Ethmoid Sphenoid Petrous temporal Basioccipital

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

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18 Gill Pouch Bones: become SPLANCHNOCRANIUM

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21 This lecture will revolve around the early embryology of the vertebrate skull. One of the landmark achievments in this was the summary of that topic – based initially the developing embryonic shark head – by Edwin S. Goodrich. Thus it has come to be known as the “Goodrich Diagram”.

22 From Studies on the structure and development of vertebrates by Edwin S. Goodrich, 1958.

23 If you’re working with the PowerPoint files, save space in your notes to draw here.

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29 Mandible (Lower Jaw)

30 Skull – Anterior View

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33 Frontal Anterior Inferior

34 Ethmoid superiorlateral

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36 Bones of the Orbit

37 Skull – Lateral View

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40 Maxilla: Lateral View

41 Parietal External Internal

42 External Internal Temporal

43 Neonatal Temporal Bone

44 Skull – Superior View

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46 Skull – Posterior View

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48 Occipital Inferior Internal

49 Skull – Inferior View

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52 Hard Palate

53 Infratemporal Region

54 Skull – Internal View

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60 Sphenoid Occipital

61 Major Ligaments Near Jaw Joint

62 Major Ligaments Near Jaw Joint: Stylomandibular Sphenomandibular

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64 Bones of the Basicranium Ethmoid Sphenoid Temporal Occipital

65 Ethmoid superiorlateral

66 Sphenoid Anterior Posterior

67 External Internal Temporal

68 Neonatal Temporal Bone

69 Sphenoid Occipital

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71 Dermal Roofing Bones Nasals Frontal Parietals

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73 Frontal Anterior Inferior

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75 Parietal External Internal

76 Dermal Facial Bones Maxilla Zygomatic Lacrimal

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78 Maxilla: Lateral View

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80 Bones of the Orbit

81 Dermal Palatal Bones Maxilla Palatine Vomer

82 Hard Palate

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

85 Sphenoid Anterior Posterior

86 V1 V2V2 Sphenoid/ anterior view of orbital surface and foramina with associated cranial nerves indicated III IV VIVI Opthalmi c v. Opth. a. Nerve of pterygoid canal ALSO CALLED VIDIAN NERVE (VII parasympathetics + sympathetics) II V3

87 Neonatal Temporal Bone

88 Middle Ear Ossicles Malleus Incus Stapes

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