How does our body control body temperature?

It is done through a process called homeostasis which is controlled through a negative feedback mechanism loop. Various receptors and effectors bring about a reaction to ensure that such conditions remain favourable.





The hypothalamus acts as a receptor in regulation, by detecting fluctuations in temperature. These receptors are better known as thermoreceptors. Skin also possesses thermoreceptors which can detect the temperature of the external environment. This information is relayed to the hypothalamus which can in turn transmit nerve pulses for corrective mechanisms to occur.





Vasodilation is a corrective response where the blood vessels close to the skin surface become more dilated, meaning their is a larger surface area for heat to be lost of the external environment from the blood vessel carrying over-heated blood.





Vasoconstriction is the opposite of this and occurs when temperatures in an organism drop. The blood vessels become constricted so that minimal heat loss occurs.





The hairs on your body also play an important role in temperature regulation. A corrective response can occur where the hairs 'stand on end', and trap a layer of air between the hair and the skin. This insulation of warmer air next to the skin reduces heat lost, while a thin layer of insulation would increase heat loss.





Other corrective mechanisms are involved, such as a drop in metabolic rate and shivering when temperatures drop.How does our body control body temperature?
check thiz website out...u will be amazed =)How does our body control body temperature?
Our body temperature is controlled by hypothalamus gland present in brain....


when we feel chill or cold, it stimulates our muscles....


muscles inturn play vital role in production of heat by shivering.....


in case of hot temperature, our body becomes hot....


our skin has minute pores and sebaceous glands....


when our body cannot resist excess heat, it secretes sweat through these pores keeping body cool.....
Body temperature is maintained by following factors.





%26gt; By regulating blood flow.





%26gt; By shivering





%26gt; By sweating





%26gt; By erection of hair present on body.





These are are controlled by nervous system and endocrine system. Main center of maintaining body temperature is hypothalamus.
The human body has the remarkable capacity for regulating its core temperature somewhere between 98掳F and 100掳F when the ambient temperature is between approximately 68掳F and 130掳F. This presumes a nude body and dry air.


The external heat transfer mechanisms are radiation, conduction and convection and evaporation of perspiration. The process is far more than the passive operation of these heat transfer mechanisms, however. The body takes a very active role in temperature regulation.


The temperature of the body is regulated by neural feedback mechanisms which operate primarily through the hypothalamus. The hypothalamus contains not only the control mechanisms, but also the key temperature sensors. Under control of these mechanisms, sweating begins almost precisely at a skin temperature of 37掳C and increases rapidly as the skin temperature rises above this value. The heat production of the body under these conditions remains almost constant as the skin temperature rises. If the skin temperature drops below 37掳C a variety of responses are initiated to conserve the heat in the body and to increase heat production. These include:


Vasoconstriction to decrease the flow of heat to the skin.


Cessation of sweating.


Shivering to increase heat production in the muscles.


Secretion of nor-epinephrine, epinephrine, and thyroxine to increase heat production


In lower animals, the erection of the hairs and fur to increase insulation.
One way is by sweating. The evaporation of sweat causes a cooling effect. Also the opening of capillaries at the skins surface allow the transfer of heat.
Through Homeostasis. To be more pricise, the circualtory system changes as cellular respiration changes. So, the more exercise the more the blood vessels have to maintain a constant temperature by dilating. This process which I forgot...enables the body to pump more blood volume, this then rushes to our skin and the excess heat is taken out through perpiration.
sweating or shivering
The short answer is: homeostasis





鈥淗omeostasis is the ability or tendency of an organism or cell to


maintain internal equilibrium by adjusting its physiological


processes. Your normal body temperature, for example, is around 98.6


deg F. If you start to get cold you shiver. Shivering is a


physiological process designed to keep your body temperature from


dropping below 98.6 deg F. Also, you may put a coat on. This will also


help keep your body temperature from dropping, but it is not a


physiological process. Your body has many physiological processes


designed to maintain many equilibriums.
By hormones, which controls the rate of perspiration.
Sweating and shivering