A friend asked a very simple question. The mercury was touching 45 degrees Celsius that day in Bhopal. When he changed this temperature to Fahrenheit, it turned out to be much higher than our normal body temperature (98.4 Fahrenheit) (113 Fahrenheit). What was worrying is how our body handles such high temperatures. Let us see what changes happen in our body with temperature fluctuations.
The major cause for concern in this case is that the chemical reactions going on inside the body of our and most other animals, which keeps us alive, keeps moving, are adjusted in such a way that 37-38 degrees. It operates well around Celsius. The main reason for this is that all the chemical reactions of organisms are carried out with the help of some catalyst. These catalysts work well at 37 ° C. It is necessary for their functioning (and for us to be healthy) that the internal temperature of the body should remain around 37-38 degree Celsius.
According to the maintenance of temperature, biologists have divided all animals into two groups. One is those animals who are equipped with the ability to keep their body temperature constant even when the temperature of the external environment is low.
As the temperature of the external environment decreases, some actions are started in their body which maintain the temperature of the body at a reasonable level. At one time they were called warm blooded animals, nowadays they are called animals with stable temperature.
Other types of animals are those which do not have any mechanism to keep the temperature constant in the body. Therefore, their body temperature varies with the external environment. They rely on behavior change (eg going into the shade, getting into the water, entering under the ground, etc.) to carry out their work. Earlier they were called cold blooded animals.
Human beings are the first type of animals, who rely on internal actions to keep their body temperature constant. Looking at the weather, we will see it only in the context of rising temperature. The main mechanism in human body to protect against the rising temperature of the external environment is to sweat. Sweating is an involuntary action that starts spontaneously by sensing the external temperature. The network of blood vessels in our skin, which plays a major role in conducting this activity.
The bottom line is that when sweat comes out of the body and comes in contact with air, it starts evaporating. As everyone knows, evaporation produces coolness. If you do not know, then let us know that we use the best form of cooling due to evaporation.
The pot is stained, the water comes out of the stomata and evaporates on the surface of the pot. As a result, the water inside the pot becomes cold.
If seen, the human body acts like a pot in summer. Sweat comes out, vaporizes on the surface of the skin and keeps the inner part of the body cool. Since the moving air promotes evaporation, it makes it easier to sit under the fan. On the other hand, if there is already too much moisture (humidity) in the atmosphere, the evaporation of sweat does not occur well. That is why there is trouble even in humid places or when the temperature is not too high in rain.
Obviously, if the outside temperature is rising and your body is sweating, then water will be needed more. Therefore, in summer, one feels more thirsty. If no water is found then the action of sweating and blowing is interrupted and the temperature of the body starts to rise, that is, fever comes. If this action of increasing temperature is very fast, it is called sunstroke and this condition can be fatal.
They end the talk by saying one or two small things.
The first thing is that apart from sweat, the body also tries many other methods. One of these important methods is related to reducing the rate of heat production in the body. Generally, most of the heat in our body is produced by muscle work. When the temperature rises, the brain sends the muscle less work.
This is the reason for summer fatigue. Secondly, sweat is not just water. If you have ever tasted, sweat is salty. This salinity is caused by the presence of salts in sweat. This means that salts are also released from the body along with sweat. Salts play an important role in conducting many body functions. When salts come out, there is a problem in the smooth functioning of the body. Therefore, you have to compensate the salts with water.
Now the only question remains is that to what extent the external temperature increases in this way our body will be able to handle the matter. The first thing to note in this is that we are not just dependent on sweat for heat control. For this, we also adopt several behavioral measures. Like being in the shade, keeping the head covered while going out in the sun, taking a shower twice or pouring water on the head, etc. These are all efforts to minimize the source of heat