Which component of connective tissue is primarily responsible for resisting compression and providing a medium for nutrient diffusion?

Which component of connective tissue is primarily responsible for resisting compression and providing a medium for nutrient diffusion?

• A. Ground substance
• B. Collagen fibers
• C. Elastic fibers
• D. Cells

Answer: (A)

In connective tissue, the extracellular matrix includes a gel-like ground substance that fills the space around cells and fibers. This hydrated matrix, rich in water and proteoglycans, cushions tissues and resists compression because the water-filled gel swells and distributes load evenly. It also acts as the medium through which nutrients, gases, and wastes diffuse between blood vessels and cells. Collagen fibers give tensile strength and resist pulling, elastic fibers provide stretch and recoil, and the cells are the living components embedded in the matrix. The ground substance is the part that best fits both roles—resisting compression and enabling diffusion—so it’s the primary component described here.

In connective tissue, the extracellular matrix includes a gel-like ground substance that fills the space around cells and fibers. This hydrated matrix, rich in water and proteoglycans, cushions tissues and resists compression because the water-filled gel swells and distributes load evenly. It also acts as the medium through which nutrients, gases, and wastes diffuse between blood vessels and cells. Collagen fibers give tensile strength and resist pulling, elastic fibers provide stretch and recoil, and the cells are the living components embedded in the matrix. The ground substance is the part that best fits both roles—resisting compression and enabling diffusion—so it’s the primary component described here.