what are the four main tissues of the body quizlet?
['Epithelial tissue. covers body surfaces; lines body cavities, hollow organs, and ducts (tubes); and forms glands.', 'Connective tissue. ... ', 'Muscular tissue. ... ', 'Nervous tissue. ... ', 'Fibroblasts. ... ', 'Macrophages. ... ', 'Plasma cells. ... ', 'Mast cells.']