Dysplasis e Arthritis e All of the bove portion of-containing box menu is alled:
ID: 3524666 • Letter: D
Question
Dysplasis e Arthritis e All of the bove portion of-containing box menu is alled: 3) 4) Which bone cell is known as the mediator of Wolffs Law? b. Osteoblast c. Osteocyte d. Osteeclast 59) The formation of bone where a preexisting canilaginous model calcifies and is replasced by bone is called b. Endochondral bone formacion 6) Which artery supplies the primary growth center of long bones? a Nutrient artery b. Periosteal artery c. Metaphyseal artery d. Epiphseal antery 7) Damage to which artery in children can result in avascular necrouis a. Nutrient artery b. Periostcall artery d. Epiphyseal antery 8) The formation of cantilage where new cartilage is deposited on the surface of existing cartilage is known as b Appositional growthExplanation / Answer
Answer of 1. Question is b. Inorganic matrix
Bone consists of
a. organic matrix(40% of dry weight)which includes :
Collagen, proteoglycans, matrix proteins(osteocalcin, osteonectin and osteopontin) and cytokinesis and growth factors.
and
b. inorganic matrix(60% of dry weight)which includes calcium and hydroxyapatite.
Answer of question 2.... a. Dysplasia
Dysplasia is common condition found in various abnormalities of secondary growth center of bone.
Answer of question 3.....d. diaphysis
Bone marrow is soft sponge like tissue found in the cavities of bones which is the primary site of blood cells formation or hematopoiesis. It is predominantly located in the diaphysis of long bones.
Answer of question 4....c. Osteocyte
Wolff's law developed by German anatomist and surgeon Jullius Wolff, states that in a healthy person, bones grow and remodel in response to the forces placed upon it.
Osteocytes are most abundant and most sensitive to mechanical loading. Upon sensing a load, Osteocytes regulate bone remodeling by signaling molecules or direct contact.
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