What is the normal temperature of a person?

The body temperature of lower animals such as snakes and frogs changes with the change of environment, so they are called warm-blooded animals or cold-blooded animals. Birds, mammals and other animals and people can keep their body temperature stable through body temperature regulation when the environment changes, so higher animals are also called warm-blooded animals or warm-blooded animals.

Because of the different blood circulation, subcutaneous fat thickness and exposure, the body temperature in different parts of the human body is also different. The axillary temperature is generally 36 to 40 degrees, the oral temperature is 36.7 to 37.7 degrees, and the rectal temperature is generally 36.9 to 37 degrees.

If a healthy person is naked in a windless environment of 25 degrees, his body temperature is 36.5 degrees, his forehead is 36.4 degrees, his back is 33.2 degrees, his hips are 30.3 degrees, his knees are 27.7 degrees, his back is 3 1. 1 degree, and his instep is 27.2 degrees. It can be seen that the temperature of the forehead is the closest to the body temperature, so it is no wonder that people often touch their foreheads to judge whether they have a fever.

Normal body temperature is the best temperature for human life activities. Generally speaking, the upper limit of body temperature is 44 to 45 degrees. At this time, protein in the body will be denatured, and the functions of liver, kidney and brain will be abnormal. If the temperature rises again, people will die. The lower limit is 33 degrees, at this time you will be unconscious and lose consciousness; When the temperature drops below 33 degrees, the thermoregulation function is lost; When it drops to 28 degrees, the myocardial contraction will be out of sync, and the pumped blood will drop significantly, leading to death.

It can be seen that in order to carry out normal life activities, the body temperature should be kept between the upper and lower limits.

Measuring body temperature