EVERYDAY SCIENCE

SCIENCE

HUMAN PHYSIOLOGY ANATOMY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Minerals and non-living matter make up ____ of a bone,s mass.
A
Three-fourth
B
One-fourth
C
One-third
D
Two-third
Explanation: 

Detailed explanation-1: -Osteoid: this is the non-mineral, organic part of the bone matrix made of collagen and non-collagenous proteins.

Detailed explanation-2: -They are living growing tissues as they are supplied with nerves, blood vessels and are made of living cells (osteocytes), which help them to develop and to repair themselves.

Detailed explanation-3: -Bone composition and structure The major minerals found in bone are calcium and phosphorus in the form of an insoluble salt called hydroxyapatite [chemical formula: (Ca)10(PO4)6(OH)2].

Detailed explanation-4: -Bone contains three types of cells: osteoblasts (AHS-tee-uh-blastz), which make new bone and help repair damage. osteocytes (AHS-tee-o-sites), mature bone cells which help continue new born formation. osteoclasts (AHS-tee-o-klasts), which break down bone and help to sculpt and shape it.

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