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Skeletal System Functions
Includes providing body support, protecting organs, producing blood cells, storing minerals, and serving as muscle attachment points.
Types of Bones
Long, short, irregular, sesamoid, and flat bones classified based on their shape.
Axial Skeleton
Consists of bones along the central body axis like cranium, vertebral column, ribs, and sternum.
Appendicular Skeleton
Comprises bones in the limbs such as pelvic girdle, leg bones, pectoral girdle, and arm bones.
Bone Structure
Connective tissue with cells and a non-cellular matrix made of calcium and phosphate.
Long Bone Macrostructure
Includes diaphysis (long shaft), epiphyses (rounded ends), cartilage, and periosteum.
Long Bone Microstructure
Contains compact bone in diaphysis and spongy bone in epiphyses with red and yellow bone marrow.
Compact Bone Microstructure
Composed of osteons with central canals, lamellae, lacunae housing osteocytes, and canaliculi for material exchange.
