31. They are used as antihypertensives because they block alpha-receptor-mediated vasoconstriction . 32. Heat loss is inhibited by the intense vasoconstriction . 33. Endothelin receptor activation mediates strong pulmonary vasoconstriction and positive inotropic effect on the heart. 34. :: Well, I think it is to do with vasoconstriction and vasodilation. 35. It also induces vascular vasoconstriction in the brain. 36. Endothelial cells are responsible for releasing vasoconstriction and vasodilator factors, thus modifying tone. 37. Therefore, nitric oxide is only produced during excessive vasoconstriction as opposed to hypoxia. 38. Adaptation to cold reduces the extreme vasoconstriction which usually occurs with cold water immersion. 39. Medications causing vasoconstriction , also known as vasoconstrictors, are one type of pupil dilation. 40. A new phase of vasoconstriction follows the vasodilation, after which the process repeats itself.
