MICROANATOMY

MUSCLE NERVE CARTILAGE BONE

CARTILAGE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
This contains calcified matrix such as inorganic salts and inorganic material.
A
osteon
B
central canal
C
concentric lamellae
D
lacunae
Explanation: 

Detailed explanation-1: -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).

Detailed explanation-2: -Each osteon is composed of concentric rings of calcified matrix called lamellae (singular = lamella).

Detailed explanation-3: -Osseous tissue has a matrix containing inorganic salts and organic fibers. The inorganic matrix gives the rigidity and hardness to bone and is composed of a combination of calcium and phosphorus salts called hydroxyapatite.

Detailed explanation-4: -COMPOSITION OF BONE The inorganic component is primarily crystalline hydroxyapatite: [Ca3(PO4)2]3Ca(OH)2. The organic component of bone comprises more than 30 proteins with type I collagen being the most abundant (>90%) [1, 2, 12].

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