blood vessel smooth muscle measurement blood vessel smooth muscle cell count 2013-06-18T11:29:28Z JSmith Measurement of the total number of cells, membrane-enclosed protoplasmic masses constituting the smallest structural unit of an organism that is capable of independent functioning, in a specified sample of vascular smooth muscle, the contractile soft tissue having fine myofibrils but lacking transverse striations composing the majority of the wall of blood vessels, the network of muscular tubes that carry blood through the body. vascular smooth muscle cell count