BONE MATRIX (OSTEOID) Inorganic matter Calcium, phosphorus, bicarbonate, magnesium, etc. Calcium and phosphorus form hydroxyapatite crystals Organic matter Type I collagen (90%) Ground substance of proteoglycan aggregates and multiadhesive glycoproteins (e.g., osteonectin) Mixture of minerals with collagen fibers (i.e., hydroxyapatite crystals are deposited in the gap regions along the collagen fibers) produces the hardness and resistance of bone.
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10 questions
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- Q1What is the inorganic component of the bone matrix?OsteonectinCalcium and phosphorus form hydroxyapatite crystalsType I collagenProteoglycan aggregates30s
- Q2What is the primary organic component of the bone matrix?OsteonectinType I collagen (90%)Proteoglycan aggregatesCalcium and phosphorus30s
- Q3What is the function of the ground substance in the bone matrix?It contains proteoglycan aggregates and multiadhesive glycoproteinsIt provides structural support and flexibilityIt forms hydroxyapatite crystalsIt stores calcium and phosphorus30s
- Q4What gives bone its hardness and resistance?Type I collagenProteoglycan aggregatesA mixture of minerals with collagen fibersCalcium and phosphorus30s
- Q5Which minerals are part of the inorganic matter of the bone matrix?Type I collagenCalcium, phosphorus, bicarbonate, magnesium, etc.OsteonectinProteoglycan aggregates30s
- Q6What is the role of osteonectin in the bone matrix?Osteonectin is a multiadhesive glycoprotein present in the ground substanceOsteonectin provides structural support and flexibilityOsteonectin forms hydroxyapatite crystalsOsteonectin stores calcium and phosphorus30s
- Q7What are the primary components of the inorganic matter in the bone matrix?Type I collagenProteoglycan aggregatesCalcium and phosphorusOsteonectin30s
- Q8What is the function of proteoglycan aggregates in the bone matrix?They provide structural support and flexibilityThey contribute to the ground substance and help with mineralizationThey form hydroxyapatite crystalsThey store calcium and phosphorus30s
- Q9What provides the structural support and flexibility to the bone matrix?Type I collagenProteoglycan aggregatesOsteonectinCalcium and phosphorus30s
- Q10What is the role of hydroxyapatite crystals in the bone matrix?They contribute to the hardness and resistance of boneThey form proteoglycan aggregatesThey provide structural support and flexibilityThey store calcium and phosphorus30s