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→Composition of Bone
==Composition of Bone==
==Composition of Bone==
*Cortical (compact) bone
**Sheath covers external surface of long bone, thicker in shaft and thins over epiphyses
**Comprised of thin lamallae in a series of concentric tubes arranged around small central canals (collectively known as an '''osteone''')
*Cancellous (spongy) bone
**Forms the hematopoeitic center of epiphyses
*Medullary Cavity and Cancellous Interstitium: bone marrow storage and production
**Red Marrow: richly vascularized, gelatinous tissue with hematopoeitic properties found abundantly in young animals
**Yellow Marrow: fat infiltration converts red marrow to yellow, causing hematopoeitic properties to dwindle
==Biomechanics of Bone==
==Biomechanics of Bone==
==Structure and Function of Cartilage==
==Structure and Function of Cartilage==