characteristic features of the trabecular cells are ( 1 ) an elongated cell body which lies across the vascular lumen and attaches to the vessel wall by means of the tips of their long processes , ( 2 ) two types of myofilaments ( thick and thin ) in the cytoplasm , ( 3 ) external dense plaques at the cell surface which are associated with the insertion of myofilaments into the cell membrane , ( 4 ) direct contact between the cell surface and the blood except at the regions where the cell is covered by external plaques and connective tissue fibrils .
C0010834
cytoplasm
C0007603
cell membrane