PATHOLOGY MCQ
HEALING AND REPAIR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a proliferative physiological process in which the body facilities the repair of a bone fracture
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restoration of health from an unbalanced, diseased, damaged or unvitalized organism. The result of healing can be to cure to a health challenge, but one can grow without being cured or heal without “a cure".
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the repair of a skull vault defected by insertion of an object, is a well-known procedure in modern neurosurgery
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dive repeatedly and can become more than one type of cell
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Detailed explanation-1: -"Bone healing is an intricate regenerative process which can be classified into primary (direct) and secondary (indirect) bone healing.” Direct/ primary healing occurs when the bony fragments are fixed together with compression. There is no callus formation.
Detailed explanation-2: -Primary bone healing is the reestablishment of the cortex without the formation of a callus. It occurs if a fracture is adequately “fixed” through reduction, immobilization, and rehabilitation. Secondary bone healing, as described above, occurs through the formation of a callus and subsequent remodeling.
Detailed explanation-3: -Cellular proliferation The most important part of the repair at this stage is the proliferation of the cells from the periosteum’s deep surface. These cells will become osteoblasts, later constituting the intercellular substance. A surrounding layer is formed around each fractured edge and grows outwards.
Detailed explanation-4: -An adequate balanced diet and sufficient amounts of vitamin D and vitamin C are essential for normal fracture healing. Conditions that compromise fracture healing include diabetes, hypothyroidism, excessive chronic alcohol use, and smoking.
Detailed explanation-5: -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.