3.2 - UNIT 3 Introduction to the Axial and Appendicular...

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UNIT 3 Introduction to the Axial and Appendicular Skeletons (Ch. 7) Introduction to the Axial Skeleton Introduction to the Appendicular Skeleton Disorders of the Axial and Appendicular Skeletons (7th edition)
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How to Study for this Unit: Please note: do not try to learn the specific bone structures of the axial and appendicular skeletons in the figures in Chapter 7; you will learn them in your next units (Units 4 & 5); focus on the following lecture notes that I have provided for you to study for Unit 3; you are familiarizing yourself with the axial and appendicular skeletons (7th edition)
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Overview of the Skeleton Consists of bones, cartilage, joints, and ligaments Composed of 206 named bones grouped into two divisions: AXIAL skeleton (80 bones) - consists of skull , vertebral column (including sacrum and coccyx ), bony thorax ( sternum , ribs , and associated cartilage), and hyoid bone APPENDICULAR skeleton (126 bones) - the bones of the appendages, including the pectoral girdle ( clavicle and scapula ), arm, hand, hip ( os coxae ), leg, and foot bones (7th edition)
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The Axial Skeleton (7th edition)
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The Skull - most skull bones are flat bones CRANIAL Bones - form the brain’s protective shell enclose and protect the brain provide attachment sites for some head and neck muscles include the frontal, parietal, occipital, temporal, sphenoid, and ethmoid bones FACIAL Bones - the skeleton of the face form the framework of the face form cavities for the sense organs of sight, smell, and taste provide openings for the passage of air and food hold the teeth anchor the muscles of the face include the unpaired mandible and vomer , plus the paired maxillary, zygomatic, nasal, lacrimal, and palatine bones and the paired inferior nasal conchae (7th edition)
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SUTURES - have an irregular, saw-toothed appearance longest sutures (e.g. coronal, sagittal, squamous, and lamboid ) connect the cranial bones other sutures connect facial bones and are named based on the bones that they connect (7th edition)
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Special Parts of the Skull NASAL CAVITY - composed of bone and cartilage; the three conchae form air passageways called meatuses ; the nasal septum , which is composed of the perpendicular plate, vomer, and septal cartilage , divides the cavity into right and left halves ORBITS
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3.2 - UNIT 3 Introduction to the Axial and Appendicular...

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