Use the key to classify each of the following described tissue types into one of the four major tissue categories. Key: connective tissue epithelium muscle nervous tissue  _________    (1) Tissue type composed largely of nonliving extracellular matrix; important in protection and support  _________    (2) The tissue immediately responsible for body movement  _________    (3) The tissue that enables us to be aware of the external environment and to react to it  _________    (4) The tissue that lines body cavities and covers surfaces