Lecture Human anatomy and physiology - Chapter 7: The skeleton (part a)

Chapter 7 - The skeleton (part a) provides knowledge of the skull. After completing this unit, you should be able to: Name, describe, and identify the skull bones. Identify their important markings; compare and contrast the major functions of the cranium and the facial skeleton.
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Lecture Human anatomy and physiology - Chapter 7: The skeleton (part a) PowerPoint® Lecture Slides prepared by Janice Meeking, Mount Royal College CHAPTER 7 The Skeleton: Part ACopyright © 2010 Pearson Education, Inc. The Axial Skeleton • Consists of 80 bones • Three major regions • Skull • Vertebral column • Thoracic cageCopyright © 2010 Pearson Education, Inc. Cranium Skull Facial bones Clavicle Thoracic cage Scapula (ribs and Sternum sternum) Rib Humerus Vertebral Vertebra Radius column Ulna Sacrum Carpals Phalanges Metacarpals Femur Patella Tibia Fibula Tarsals Metatarsals (a) Anterior view PhalangesCopyright © 2010 Pearson Education, Inc. Figure 7.1a The Skull • Two sets of bones 1. Cranial bones • Enclose the brain in the cranial cavity • Cranial vault (calvaria) • Cranial base: anterior, middle, and posterior cranial fossae • Provide sites of attachment for head and neck musclesCopyright © 2010 Pearson Education, Inc. The Skull 2. Facial bones • Framework of face • Cavities for special sense organs for sight, taste, and smell • Openings for air and food passage • Sties of attachment for teeth and muscles of facial expressionCopyright © 2010 Pearson Education, Inc. Bones of cranium (cranial vault) Coronal suture Squamous suture Lambdoid Facial suture bones (a) Cranial and facial divisions of the skullCopyright © 2010 Pearson Education, Inc. Figure 7.2a Anterior cranial fossa Middle cranial fossa Posterior cranial fossa (b) Superior view of the cranial fossaeCopyright © 2010 Pearson Education, Inc. Figure 7.2b Cranial Bones • Frontal bone • Parietal bones (2) • Occipital bone • Temporal bones (2) • Sphenoid bone • Ethmoid boneCopyright © 2010 Pearson Education, Inc. Frontal Bone • Anterior portion of cranium • Most of anterior cranial fossa • Superior wall of orbits • Contains air-filled frontal sinusCopyright © 2010 Pearson Education, Inc. Frontal bone Glabella Parietal bone Frontonasal suture Supraorbital foramen Squamous part (notch) of frontal bone Nasal bone Supraorbital margin Superior orbital Sphenoid bone fissure (greater wing) ...