Areolar connective tissue is best described as a loose connective tissue with a flexible extracellular matrix.

Areolar connective tissue is best described as a loose connective tissue with a flexible extracellular matrix.

• A. Areolar connective tissue
• B. Dense irregular connective tissue
• C. Adipose tissue
• D. Hyaline cartilage

Answer: (A)

The statement hinges on how the extracellular matrix is organized. Areolar connective tissue is the classic loose connective tissue, with a loose, gel-like ground substance and only sparsely packed collagen and elastic fibers. That light, flexible matrix allows ample space for diffusion, cushioning, and movement of surrounding tissues, giving it the pliability described. Dense irregular connective tissue, by contrast, has many densely packed collagen fibers, making it strong and resistant to tearing in multiple directions but less flexible. Adipose tissue is loose in its general arrangement but is dominated by fat storage cells with relatively little or specialized connective matrix, so it doesn’t emphasize a flexible ECM the way areolar tissue does. Hyaline cartilage has a firm, glassy extracellular matrix rich in proteoglycans and collagen, which makes it strong and not loose or highly flexible.

The statement hinges on how the extracellular matrix is organized. Areolar connective tissue is the classic loose connective tissue, with a loose, gel-like ground substance and only sparsely packed collagen and elastic fibers. That light, flexible matrix allows ample space for diffusion, cushioning, and movement of surrounding tissues, giving it the pliability described.

Dense irregular connective tissue, by contrast, has many densely packed collagen fibers, making it strong and resistant to tearing in multiple directions but less flexible. Adipose tissue is loose in its general arrangement but is dominated by fat storage cells with relatively little or specialized connective matrix, so it doesn’t emphasize a flexible ECM the way areolar tissue does. Hyaline cartilage has a firm, glassy extracellular matrix rich in proteoglycans and collagen, which makes it strong and not loose or highly flexible.