Organic Response to Cold

Our body is like a group of thermometers: When they perceive the cold, the system reacts to maintaining our vital functions.

The temperature of various areas of the body changes when we are cold - the intestines and the brain remains at 37 °C, while the periphery parts and the skin can cool off.

In our skin, temperature sensors are thermoceptors - molecules present at the bottoms of sensitive neurons.

He has thermoceptors to feel cold and others for hot. The temperature information reaches the brain, which organizes body reactions: from skin vascontrination (which gives a faint, for example), to muscle contraction.

Brain

The temperature information reaches the brain, listed in the cerebral cortex (which makes us perceive the cold) and the hypotholamus: this is the brain region that deals with thermosolation and begins a series of reactions.

Breathing Ways

The air is wet and heated in the nose and in the first part of the respiratory system. In the cold, respiratory activity must be increased: It is necessary to obtain more oxygen to support heating production.

Body

In fact, adipos of coffee produces heat. Foundational in fixing newborn temperatures, adults are placed on the neck and vertebrae - a fine position in particular to heat up the blood that goes to the brain and the spinal cord.

Muscles

One form of protection against the cold is the shaking: continued tonic contractions of muscles, which like any movement generate heat. The shaking of the larger muscle makes the jaw tremble and makes the teeth beat.

The vascular system

There is a surface vasocontrition: less blood reaches the skin and reduces heat loss in the environment. Blood is diverted to the internal organs, the temperature of which must be maintained.