aorta wall morphological measurement aorta smooth muscle cell count 2013-06-18T10:42:34Z 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 the aorta smooth muscle, the contractile soft tissue having fine myofibrils but lacking transverse striations composing the majority of the wall of the great artery arising from the left ventricle from which the systemic arterial system proceeds. aortic smooth muscle cell count blood vessel smooth muscle cell count