MICROANATOMY

MUSCLE NERVE CARTILAGE BONE

BONE STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The inorganic matrix comprises ____ and provides the bone with ____
A
calcium phosphate salts, resilience
B
collagen, flexibility
C
collagen, cancellous
D
calcium phosphate salts, strength
Explanation: 

Detailed explanation-1: -The inorganic matrix of bone consists of a calcium hydroxyapatite, which is in a crystalline structure.

Detailed explanation-2: -Bone matrix (also known as osteoid) consists of about 33% organic matter (mostly Type I collagen) and 67% inorganic matter (calcium phosphate, mostly hydroxyapatite crystals). The osteoblasts occur as simple, epithelial-like layer at the developing bone surface.

Detailed explanation-3: -Bone matrix The hardness and rigidity of bone is due to the presence of mineral salt in the osteoid matrix, which is a crystalline complex of calcium and phosphate (hydroxyapatite). Calcified bone contains about 25% organic matrix (2-5% of which are cells), 5% water and 70% inorganic mineral (hydroxyapatite).

Detailed explanation-4: -Calcium phosphate minerals are the main inorganic component of the bones and teeth.

There is 1 question to complete.