Which statement best describes the main extracellular matrix component of dense regular connective tissue?

Which statement best describes the main extracellular matrix component of dense regular connective tissue?

• A. Collagen fibers
• B. Elastic fibers
• C. Reticular fibers
• D. Ground substance only

Answer: (A)

Dense regular connective tissue gets its strength from the extracellular matrix being dominated by collagen fibers arranged in parallel. This organization provides high tensile strength in the direction of the fibers, which is essential for tissues like tendons and ligaments that must resist pulling forces along one axis. So, collagen fibers are the main ECM component here. Elastic fibers would add some stretch, but they’re not the primary element in this tissue; reticular fibers form delicate supportive networks in other contexts, and ground substance alone wouldn’t explain the dense, fibrous structure.

Dense regular connective tissue gets its strength from the extracellular matrix being dominated by collagen fibers arranged in parallel. This organization provides high tensile strength in the direction of the fibers, which is essential for tissues like tendons and ligaments that must resist pulling forces along one axis. So, collagen fibers are the main ECM component here. Elastic fibers would add some stretch, but they’re not the primary element in this tissue; reticular fibers form delicate supportive networks in other contexts, and ground substance alone wouldn’t explain the dense, fibrous structure.