| 释义 |
Pericyte
pericyte[′per·ə‚sīt] (histology) A mesenchymal cell found around a capillary; it may or may not be contractile. Pericyte (also Rouget cell), a branching cell in the wall of a blood-carrying capillary. The cytoplasm of pericytes is characterized by the presence of fibrillar elements and micropinocytotic vesicles, whose membranes exhibit adenosine triphosphatase activity. The outgrowths of pericytes surround the capillaries and, penetrating the basement membrane, either come into contact with the endothelial cells or are separated from the cells by a narrow space. Some scientists consider pericytes to be partially differentiated cells, capable of being transformed into other cellular elements of connective tissue. Others consider pericytes to be differentiated contractile elements, capable of changing the lumen of the capillary. Still others admit the existence of various types of pericytes, capable of regenerative or contractile functions. pericyte
pericyte [per´ĭ-sīt] one of the peculiar elongated, contractile cells found wrapped about precapillary arterioles outside the basement membrane.per·i·cyte (per'i-sīt), Do not confuse this word with parasite.One of the slender, mesenchymallike cells found in close association with the outside wall of postcapillary venules; it is relatively undifferentiated and may become a fibroblast, endothelial cell, or smooth muscle cell. Synonym(s): adventitial cell, pericapillary cell, perithelial cell [peri- + G. kytos, cell] per·i·cyte (per'i-sīt) One of the slender mesenchymallike cells found in close association with the outside wall of postcapillary venules; it is relatively undifferentiated and may become a fibroblast, macrophage, or smooth muscle cell.
Synonym(s): adventitial cell. [peri- + G. kytos, cell] |