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cartilaginous area at the ends of long bones where lengthwise growth takes place in the immature skeleton (in metaphysis)
mature bone cells located within lacunae. main cells in bone tissue and maintain its daily metabolism, such as the exchange of nutrients and wastes with the blood. do not undergo cell division. lower activity rates. help maintain matrix.
A dividing bone-forming cell that secretes collagen and organic compounds. Form lamellae, becomes enclosed in lacuna, then differentiates into an osteocyte.
A phagocytic-like bone cell that breaks down bone matrix to release calcium and phosphate into the bloodstream. Burrow tunnels called Haversian canals
one of a network of tubes running through compact bone that contains blood vessels and nerves
Composed of bones that form main longitudinal axis of animal's body (rib, vertebra, skull, sternum, etc)
Limb or fin bones and bones that connect them to axial skeleton (Femur, radius, ulna, humerous, etc)
Provide support and protection, but not protect the body surface. Can protect internal organs
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