one of many contractile filaments that make up a striated muscle fiber
造句
用作名詞(n.)
All cells have secretory and absorptive functions besides 4ibblasts and granular cells in connective tissue, there are myofibril, collagenous fibril and unmyelinated fibers. 結締組織中除有成纖維細胞和顆粒細胞外還充滿膠原原纖維和肌原纖維，無髓神經原纖維也較多。