(Source: Getty). The European Court of Auditors has calculated that the cost of moving the European parliament between Brussels and Strasbourg every month amounts to an eye watering â¬114m a year.Source: Getty). The European Court of Auditors has calculated that the cost of moving the European parliament between Brussels and Strasbourg every month amounts to an eye watering â¬114m a year.
The smooth muscle, which is innervated by the sympathetic nervous system, controls the diameter of the blood vessel, and it plays an important role in blood pressure.
Because capillaries are only one cell layer thick, they only have a tunica intima. This ultra-thin design allows for the exchange of gases and nutrients through the capillary walls. The smooth muscle found in the tunica media can be stimulated to contract, and this results in vasoconstriction and the narrowing of the blood vessel. When the stimulation stops, the smooth muscle relaxes, resulting in vasodilation and the widening of the blood vessel.