part of fibroblast cell of skeletal muscle skeletal muscle fibroblast skeleton muscle fibroblast https://cellxgene.cziscience.com/cellguide/CL_0011027 Skeletal muscle fibroblasts (SMFs), with their spindle-shaped morphology, play a crucial role in maintaining the structure and function of skeletal muscles. They produce connective tissues enveloping muscle fibers, offering vital structural support for optimal muscle contraction. SMFs are integral components of the dynamic and complex microenvironment of muscle tissue, contributing significantly to healthy muscle development and homeostasis. SMFs primarily synthesize and secrete extracellular matrix (ECM) components, such as collagen, fibronectin, and proteoglycans. The resulting ECM exhibits mechanical properties that resist tensile forces from muscle contractions, ensuring muscle efficiency. It also crucially transmits force during muscle movement, aids muscle attachment to the skeletal structure, and serves as a scaffold for muscle regeneration and repair. Following injury, they proliferate and transform into myofibroblasts, aiding wound contraction and depositing new ECM for tissue repair. Additionally, these fibroblasts modulate inflammatory responses by secreting cytokines and interact with other cell types, like immune cells and satellite cells, to coordinate muscle healing. In diseases, an imbalance in SMF activity may lead to conditions such as fibrosis, marked by excessive ECM deposition and impaired muscle function. (This extended description was generated by ChatGPT and reviewed by the CellGuide team, who added references, and by the CL editors, who approved it for inclusion in CL. It may contain information that applies only to some subtypes and species, and so should not be considered definitional.) Any fibroblast that is part of skeletal muscle tissue. muscle fibroblast skeletal muscle tissue