Chapter 20

Chapter 20 - Chapter 20 The Axial Skeleton 1 l Axial...

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Unformatted text preview: Chapter 20 The Axial Skeleton 1 l Axial skeleton Skull Vertebral column Thoracic cage l Appendicular skeleton Pectoral and pelvic girdles Upper and lower limbs Skeletal system includes both: 2 The Skull 3 The cranium l Cranial vault or calvaria Superior, lateral, and posterior walls of the skull l Cranial floor or base Anterior fossa Middle fossa Posterior fossa 4 l Consists of the cranium and the bones of the face l Superficial landmarks include the sutures Lambdoid-between occipital and parietal bones Coronal-between parietal and frontal bones Sagittal-between parietal bones Squamous-between parietal and temporal bones The skull 5 The skull 6 The skull 7 The skull 8 l one occipital bone foramen magnum l two parietal bones l one frontal bone frontal sinuses glabella Cranial Bones l two temporal bones auditory ossicles l one sphenoid l one ethmoid 9 The Sectional Anatomy of the Skull 10 The Sectional Anatomy of the Skull 11 The Occipital and Parietal Bones 12 Occipital and parietal bones l Occipital bone Foramen magnum Occipital condyle External occipital crest External occipital protuberance l Parietal bone 13 Frontal bone 14 Frontal bone l Supraorbital foramen l Glabella 15 Temporal bone 16 Temporal bone is divided in regions l Squamous region Squamous suture Zygomatic process l Zygomatic arch Mandibular fossa l Tympanic region External auditory meatus Styloid process 17 Temporal bone is divided in regions l Mastoid region Mastoid process l mastoiditis l Meningitis Stylomastoid foramen l Passage for cranial nerve VII l Petrous region Internal acustic meatus l Passage for cranial nerves VII and VIII 18 The Sphenoid 19 Sphenoid bone l Greater wings l Sella turcica For the pituitary gland...
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Chapter 20 - Chapter 20 The Axial Skeleton 1 l Axial...

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