Seafood is a staple in nearly every Chilean's diet. Shellfish such as loco (abalone), erizo (sea urchin) and piure (an unusual red invertebrate) join more widely known fish, including sardines, salmon, congrio (conger eel) and atÃºn (yellowfin tuna).
To work efficiently, pipes need a way of regulating how much fluid can pass through them; they also need a way of switching the flow off completely. That's the job that valves do: valves are like mechanical switches that can turn pipes on and off or raise or lower the amount of fluid flowing through them.
Heart valves are normally thin, smooth structures that open to allow blood to flow through the heartâs four chambers and then close tight to prevent back flow. If one of them does not function normally, it can cause the heart to work harder and create symptoms such as shortness of breath, dizziness, or chest pain.