Vasodilation refers to the widening of blood vessels. It results from relaxation of smooth muscle cells within the vessel walls, in particular in the large veins (called venodilators), large arteries, and smaller arterioles. The process is the opposite of vasoconstriction, which is the narrowing of blood vessels. When blood vessels dilate, the flow of blood is increased due to a decrease in vascular resistance. Therefore, dilation of arterial blood vessels (mainly the arterioles) decreases blood pressure.
Answer by Bessey52. Confidence votes 7.6K. An IQ of 123 is in the upper 5% of the population-however, even if you may be blessed with a high IQ, it comes down to what you plan to do to use it to its full capacity. A good IQ test is not age-dependent, so any score over 100 (which is average) would be, by definition, above average, irrespective of age. 2 people found this useful.
The US does not feature on this list, sitting in joint 19th place on 98 points (just below the median IQ score of 100). Canada fares worse, on 97 points, whilst the UK and China manage to score slightly better, at 100. No country scores especially highly; not a single nation ended up with an average score equal to the intellectually gifted level (IQ 130+). However, that is hardly surprising, as a country populated largely by people with an IQ over 130 would be utopian.