Tuesday, November 20, 2012

We Feel Thirsty

Why do we feel thirsty?

            Why do you think we feel more thirsty when we exercise or when we are tense? Many people think that parching of mouth or throat is only caused by thirst. But, this is not true. Such parching can occur due to many other cases also. Tension or production of less saliva by the salivary glands as also produces thirst and so can nervousness. Have you ever wondered why we feel thirsty? Present in our blood. The body tissues also contain these two substances. Under the normal condition, the proportion of these two materials in blood remains constant. If due to some reason, the amount of water in blood gets reduced, the proportion of these two materials in blood remains constant. If due to some reason, the proportion of the two materials also changes. In such a situation, the thirst center located in the brain sends signals to the throat. As a result of this, the throat starts contracting. This contraction makes it dry ad we start feeling thirsty and want to drink water.
We feel thirsty when the amount of water in blood gets reduced
            However, sometimes, the salivary glands secrete enough saliva and our stomach and blood too have enough water and yet we feel thirsty. For example, when man drinks liquor he takes enough quantity of slated preparations along with the drink. Though the amount of water goes on increasing with the intake of liquor, consumption of salted foods also increases the quantity of salt in blood. As a result of this, the amount of salt in blood exceeds the normal level. This disturbs the normal proportion of salt and water in the blood. In such a situation, we feel thirsty. Excessive thirst may be a symptom of diabetes or kidneys ailments. In such cases, immediate medical check up should be undertaken.

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