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The Skeletal Syste2

The Skeletal Syste2 - Skull • The skull consists of 28...

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The Skeletal System: Bones and Joints Bone Growth Bone growth occurs by apposition. Bone elongation occurs at the epiphyseal plate as chondrocytes proliferate, hypertrophy, die, and are replaced by bone. Bone Remodeling Bone remodeling consists of removal of existing bone by osteoclasts and deposition of new bone by osteoblasts. Bone Repair During bone repair, cells move into the damaged area and form a callus, which is replaced by bone. General Considerations of Bone Anatomy There are 206 bones. Axial Skeleton The axial skeleton includes the skull, vertebral column, and thoracic cage.
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Unformatted text preview: Skull • The skull consists of 28 bones: 8 cranial vault bones, 14 facial bones, and 6 auditory ossicles. • From a lateral view, the parietal, temporal, and sphenoid bones can be seen. • From a frontal view, the orbits and nasal cavity can be seen, as well as associated bones and structures, such as the frontal bone, zygomatic bone, maxilla, and mandible. • The interior of the cranial vault contains three fossae with several foramina. • Seen from below, the base of the skull reveals numerous foramina and other structures, such as processes for muscle attachment....
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