In terms of its tissue classification, blood is classified as a (1)tissue because it’s extracellular matrix determines its function. Blood is composed of living blood cells, called formed substances, suspended in a nonliving fluid matrix called ___(2). The "fibers" of blood only become visible during (3).

1. In terms of its tissue classification, blood is classified as a Connective Tissue because it’s extracellular matrix determines its function.

2. Blood is composed of living blood cells, called formed substances, suspended in a nonliving fluid matrix called Plasma

3. The "fibers" of blood only become visible during blood clotting.

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Explanation:

1.  Blood is classified as connective tissue because it has living blood cells

2. Blood is a specialized type of connective tissue in which living blood cells, called the formed elements, are suspended in a nonliving fluid matrix called plasma

3. BLOOD: It is considered a connective tissue, because it consists of blood cells surrounded by a nonliving fluid matrix called blood plasma. It is the most atypical connective tissue: the fibers of blood are soluble protein molecules that become visible during blood clotting