Final answer:
The statement regarding the extracellular matrix composition is true; it consists of collagen, elastin, and a gel-like ground substance made of proteoglycans. Collagen provides structural support, while the ground substance facilitates cell adhesion and intercellular communication.
Step-by-step explanation:
The statement 'The extracellular matrix is made up of collagen, elastin, and a gel-like ground substance' can be considered true as it correctly identifies the major components of extracellular matrix (ECM). The ECM is a network of non-living materials that support cells within an animal tissue. It is composed of protein fibers like collagen and elastin, which provide strength and elasticity to tissues, and a gel-like ground substance, which often includes proteoglycans and is responsible for the matrix's viscous texture.
Collagen is the most abundant protein in the ECM and provides structural support. The fibroblasts, which are the principal cells of connective tissues, produce collagen and other fibers found within the matrix. The ground substance, secreted by fibroblasts, is made of polysaccharides and proteins that combine to form proteoglycans with a core protein. It is this intricate matrix that not only helps in cell adhesion, giving tissue its form, but also plays a crucial role in intercellular communication, thereby influencing cell behavior, movement, and proliferation.