Bone matrix is rich in
(a) fluoride and calcium
(b) calcium and phosphorus
(c) calcium and potassium
(d) phosphorus and potassium
Answer- (b)
Solution- The bone cells are present in a hard matrix. The primary tissue of bone, osseous tissue, is hard and lightweight made up of salts of calcium and phosphate. The matrix is deposited in form of concentric layers of lamellae around a central aversion canal. The bone cells occupy small spaces between the concentric layers of matrix.
The correct option is – (b)- calcium and phosphorus