Ask this Question. If you do you will be blessed by me. Hellpppppppppppppppppppppppppppppppppppppppppppppppppp

Question

Read Carefully
A thick band of bone forms around a broken bone has it heals. In time, the thickened band disappears. Explain how this extra bone can disappear over time.

Answer 1

You are absolutely right! A thick band of bone DOES in fact form around a broken bone after a break, and this thickening is called a callus.

Although they may appear dry and lifeless, bones are just as alive as the tissue that surrounds them. Inside the hard outer part of a bone is a spongy center filled with blood vessels and special cells that constantly tear down and rebuild the bone from the inside out. Bone cells called OSTEOCLASTS are like a demolition crew, breaking down old bone material. Meanwhile cells called OSTEOBLASTS are like a construction crew, building up new bone material as the old stuff is demolished.

So how do these cells help broken bones heal? When a bone breaks, a blood clot forms around the break. The osteoclasts near the site of the break immediately begin clearing away the "rubble" (any broken shards of bone, uneven edges, etc). Meanwhile, the osteoblasts create the thickened bone callus to replace the blood clot and hold the broken bone together. At the same time, the osteoblasts also produce new bone material to repair the damage. After many weeks, when the bone has regained its structural integrity and can support weight, the osteoclasts function again to "chew" the callus away.

Depending on the bone and the severity of the fracture, after several weeks its hardworking cells can repair a broken bone as good as new.

Answer 2

The phase you are refering to is the remodelling phase.

The remodelling process substitutes the trabecular bone with "compact bone". The trabecular bone is first resorbed by osteoclasts, creating a shallow resorption pit known as a "Howship's lacuna". Then osteoblasts deposit compact bone within the resorption pit. Eventually, the fracture callus is remodelled into a new shape which closely duplicates the bone's original shape and strength.

Answer 3

when we don;t use any part of our body ,with the passage of time it went to be disapeare.according to theories it is proved that anccester of snakes had legs ,when they lose to move legs ,then with the passage of time these are romoved from snakes body.
similarly this band also disappeared because it does not do any work in body

Answer 4

for healing the internal mechanisam of living organisms some times it goes of some times it will be there

Answer 5

i guess it's kinda like a scab. and in time that will dissappear too.

Answer 6

i dont know and it sounds weird