Almost all spices tend to have volatile aroma compounds and not flavor compounds like sugar, salt, acid, or glutamates. They may occasionally be bitter though. Aromas and taste work by different chemistries. Sugar, salt, citric acid, and MSG all have taste but not smell. Some foods like many fruits, have both fruity esters and essential oils, while also having sugars and acid which gives them both.
The sound of a heartbeat is caused by the heart valves opening and closing as they pump blood. When the heart is working properly, blood can only flow in one direction. The valves make this possible by opening and closing in exact coordination with the heartâs pumping action.
What causes heart murmurs? Heart murmurs are often caused by defective heart valves. A stenotic heart valve has a smaller-than-normal opening and can't open completely. A valve may also be unable to close completely. This leads to regurgitation, which is blood leaking backward through the valve when it should be closed.