the skeletal system. axial skeleton appendicular skeleton
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The Skeletal System


Axial Skeleton
Appendicular Skeleton

Axial Skeleton

Axial Skeleton

Axial Skeleton

Axial Skeleton

Axial Skeleton Hyoid Bone

Axial Skeleton

Axial Skeleton

Appendicular Skeleton

Appendicular Skeleton

Appendicular Skeleton

Appendicular Skeleton

Bone Tissue
Osteoblasts – bone forming cells
Osteocytes – The BONE CELLS
Osteoclasts – bone reabsorbing cells

Two Types of Bone Tissue
Compact Bone and Spongy Bone



Classification of Bones
Long Bones Short Bones Flat Bones
Irregular Bones
ProximalEpiphysis
Diaphysis
DistalEpiphysis

Features of Bone
Projections that form joints
Features of Bone
Projections that form joints
Projections that are sites of muscle & ligament attachment
Features of Bone
Projections that form joints
Projections that are sites of muscle & ligament attachment
Openings that allow blood vessels and nerves to pass
Features of Bone
Projections that form joints
Projections that are sites of muscle & ligament attachment
Openings that allow blood vessels and nerves to pass
Depressions

Structure of Bone

Bone Development & Growth
Two Categories of Bone Development
1.Intramembranous (Direct) – forms spongy bone and eventually may form compact bone from embryonic fibrous membrane
2.Endochondral - bone forms from cartilage; forms skull & flatbones
Before week 8 of fetal life, the human skeleton is all fibrous membrane & hyaline cartilage

Bone Development & Growth

Epiphyseal Plate – Growth Plate

Joints or Articulation

Joints – Three Types
Fixed Joint
Cartilaginous Joint
Synovial Joint

Synovial Joints

Broken Bone Repairs


Michael Paulus' Cartoon Skeletons