Which of the following correctly describes components of the extracellular matrix and associated cells?
a. Proteoglycans are a component of connective tissues but are relatively unimportant in watery tissues (such as the interior of the eye.)
b. Integrins can be activated only from signaling inside of a cell.
c. Integrins can attach directly to collagen fibers in the extracellular matrix.
d. Fibroblasts secrete collagen and form it into specific shaped structures.
Ans: d. Fibroblast secrete collagen and form it into specific shaped structure
Explanation: Fibroblast are primary source of extracellular matrix which involve in the modification of collagen.Collagen is generally modified when cell gets injured it means they are more functional in wound healing.
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