|Which of the following choices is NOT correct? A. Blood platelets are products of megakaryocytes B. Yellow marrow is composed primarily of adipose tissue (fat) C. Formation of unstable collagen helices can result of vitamin C deficiency D. Worn out and old RBCS are normally destroyed in the spleen by macrophages E. Fibronectin contains binding sites for integrins and is an important part of the ECM in connective tissue F. None of the above Both B and D
The blood is the fluid connective tissue that plays an important role in transporting oxygen, carbondioxide, nutrients to all parts of the body. It is composed of red blood cells, white blood cells and platelets.
Correct answer: None of the above options.
Reason for correct answer:
Option.F is given as ‘None of the above’.
The blood platelets are the components of blood that are produced by the megakaryocytes. The bone marrow consist of two types namely red marrow and yellow marrow. The yellow marrow is composed of adipose tissue. The vitamin C is essential for the proper formation of collagen. Deficiency of vitamin C causes the formation of unstable collagen helices. The spleen is the major site of destruction of red blood cells. The damaged and aged red blood cells are removed by macrophages in the spleen. The fibronectin is the receptor present in the ECM in connective tissue. It binds to the ligand integrins through motif present in the fibronectin. Hence option.F is correct.
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