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Given below is the diagrammatic sketch of a certain type of connective tissue. Identify the parts labeled A, B, C and D, and select the correct answer from the given option.

1. Macro-phage, Fibroblast, Collagen fibres, Mast cells
2. Mast cell, Macro-phage, Fibroblast, Collagen fibres
3. Macro-phage, Collagen fibres, Fibroblast, Mast cell
4. Mast cell, Collagen fibres, Fibroblast, Macrophage

Correct answer: Mast cell, Macro-phage, Fibroblast, Collagen fibres

Solution

In areolar connective tissue, mast cells are typically round and granulated, macrophages are irregular and amoeboid, fibroblasts are spindle-shaped, and collagen fibers appear as thick wavy bundles. Matching these features to the labels gives the sequence Mast cell, Macro-phage, Fibroblast, Collagen fibres.

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