Blood vessel is not a simple uncaring tubing that carries blood from here to there and back again. It is a transportation system with important biological function. It can adjust exquisitely the individual needs of its recipient organ. It also plays important rolesin the pathogenesis of some serious vascular diseases such as hypoxic pulmonary hypertension and stroke. In order to fulfill these different requirements, individualities abound among the smooth muscles of the blood vessle that control the blood flow through various parts of the blood circuit.
|