The origins of the Mass Rapid Transit (MRT) are derived from a forecast by city planners in 1967 which stated the need for a rail-based urban transport system by 1992.he lines are built by the Land Transport Authority, a statutory board of the Government of Singapore, which allocates operating concessions to the profit-based corporations, SMRT Corporation and SBS Transit. These operators also run bus and taxi services, thus facilitating full integration of public transport services.
A silent heart attack is a heart attack that happens without causing noticeable symptomsâor at least, without causing symptoms so severe that the victim cannot ignore them. Most of us tend to think about a myocardial infarction (heart attack) as a pretty dramatic eventâand most of the time, it is.
Yes, having a heart attack means part of your heart muscle dies. Heart attacks occur when blood flow to the heart muscle is blocked, most commonly by fatty deposits of plaque in the coronary arteries.If the plaque breaks open, a clot can form, which can prevent the flow of blood and oxygen to the heart muscle to the point where it dies.eart attacks occur when blood flow to the heart muscle is blocked, most commonly by fatty deposits of plaque in the coronary arteries. If the plaque breaks open, a clot can form, which can prevent the flow of blood and oxygen to the heart muscle to the point where it dies.