Fibrous refers to a type of cellular morphology that is characterized by a long and thin, thread-like structure. This morphology is commonly observed in cells such as fibroblasts, which are found in connective tissue throughout the body.

Fibroblasts are responsible for producing and maintaining the extracellular matrix of connective tissue, which provides structural support and helps to regulate cellular behavior. Their fibrous morphology allows them to produce and organize the extracellular matrix components such as collagen, elastin, and fibronectin, which are necessary for the structural integrity of connective tissue.

Fibrous cells can also refer to muscle cells such as skeletal and cardiac muscle fibers, which have a long and thin structure that allows for contraction and movement. These muscle fibers are made up of myofibrils, which contain the contractile proteins actin and myosin that allow for the generation of force and movement.

Overall, the fibrous morphology of cells is important for their function in providing structural support, generating force, and maintaining tissue homeostasis. Alterations in fibrous cell morphology can contribute to a variety of diseases and disorders, including connective tissue disorders and muscle diseases.