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.

Urine Formed in our Body

How is urine formed in our body?

            Our urinary system consists mainly of two bean shaped glandular organs in the lumbar region of the abdominal cavity, which are called kidneys. They are reddish brown in color. Each kidney is approximately 11 centimeters long, 5 centimeters wide and 2.5 centimeters thick. Each of them weighs about 150 grams. Do you know what the function of the kidney is?

Human Kidney

            The main function of the kidney is to purify our blood by removing the impurities from it. They work as filters. The kidneys also maintain proper proportion of every constituent in the blood. If sometimes the level of sugar salt or water in blood excesses the normal level, the kidneys excrete the excess amount from it. They also regulate the formation of urine according to the exigencies of the situation and thus do not allow the blood to become extra thick or thin. The undesirable acids and bases of the blood come out of the body as urine.

            Each kidney has millions of coiled capillaries. Blood enters the kidneys through the renal artery and passes through these capillaries and the dissolved impurities are filtered our. The purified blood returns to the lungs. About 200 liters of blood pass through the kidneys every day. The impurities removed from the blood pass form the kidneys to a bag where they are stored for some time. This bag is known as the bladder. When the bladder is sufficiently filled, one feels the urge to empty it. We pass urine primarily to empty this bladder. Normally, an ordinary person passes 1.5 liters of urine in one day.

            Any disorder or damage to the kidneys is very dangerous for the body. If the kidneys become defective, impurities in blood go on increasing and have poisonous effect on the body. If somebody’s kidneys stop faction, the person dies within a few days. It is, therefore, absolutely essential to have proper treatment of any defect or disease of the kidneys. It is necessary to take proper quantity of food in order to keep them healthy. Excessive eating compels the kidneys to work more to expel more excretory material and thus the chances of any damage to the kidneys increase. To keep the kidneys healthy, we should take eight to ten glasses of water every day.

What Causes People to Faint?

            We often see that people faint on receiving some tragic news or on getting frightened suddenly. The body gets drenched in sweat and becomes cold. The face turns pale and physical consciousness decreases.

            Unconsciousness is a factor that has puzzled men for a long time.

            Unconsciousness can be caused not only by a shocking new or terrible fear, but by many other factors also. People may faint because of confinement in a closed and poorly ventilated room, hunger, fatigue, severe pain, emotional shock, some heart problem, and sudden fall in blood sugar. Have you wondered why people become unconscious under these conditions?

Treatment to Unconscious Man

            In order to be aware of the reasons of fainting, it is essential to know what consciousness is. For the normal functioning of the brain, it is essential that there should be proper circulation of blood in the brain. As log as the brain gets its proper supply of blood, all our physical activities remain normal. The normal functioning of the brain is, in fact, consciousness. If there is some obstruction in the blood supply to the brain, our physical processes get disturbed. Whatever may be the cause of fainting, man will become unconscious when the normal supply of blood of the brain is disrupted. Hence fainting or syncope is a temporary loss of consciousness resulting form insufficient supply of blood to the brain.

            The following measures can prevent the state of unconsciousness. If somebody feels that he is about to faint, he should immediately lie down. If this is not possible, he should bend downwards and enclose his head in between the knees. Both these measures enhance the blood supply to the brain. As long as the brain receives a proper supply of blood, a person’s chances of becoming unconscious are greatly reduced.

            If somebody has become unconscious, he should be laid down and his clothes should be loosened so that he can breathe easily. His head should be kept at a little lower level than the rest of his body. This will increase the blood supply to his brain and he will regain consciousness. Once he is conscious, he should be given tea or coffee. If somebody has fainted because of head injury or heat stroke, he should be taken to hospital immediately.