ANATOMY

GENERAL ANATOMY

SKELETAL ANATOMY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Bone remodeling is a process when old, brittle bone tissue is removed or resorbed and replaced by new tissue.
A
True
B
False
Explanation: 

Detailed explanation-1: -Bone remodeling is a physiological process in which old or damaged bone is removed by osteoclasts (i.e., bone-resorbing cells), then replaced by new bone formed by osteoblasts (i.e., bone-forming cells).

Detailed explanation-2: -The remodeling cycle consists of three consecutive phases: resorption, during which osteoclasts digest old bone; reversal, when mononuclear cells appear on the bone surface; and formation, when osteoblasts lay down new bone until the resorbed bone is completely replaced.

Detailed explanation-3: -Bone remodeling is the replacement of old bone tissue by new bone tissue. It involves the processes of bone deposition by osteoblasts and bone resorption by osteoclasts.

Detailed explanation-4: -There are four stages in the repair of a broken bone: 1) the formation of hematoma at the break, 2) the formation of a fibrocartilaginous callus, 3) the formation of a bony callus, and 4) remodeling and addition of compact bone.

Detailed explanation-5: -Bone remodeling is a highly complex process by which old bone is replaced by new bone, in a cycle comprised of three phases: (1) initiation of bone resorption by osteoclasts, (2) the transition (or reversal period) from resorption to new bone formation, and (3) the bone formation by osteoblasts [10, 11].

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