**Sense organ responsible for feeling hot and cold**

Skin

The sense organ responsible for feeling hot things and cold things is the skin. The skin is the largest organ in the human body and is equipped with specialized receptors that allow us to detect changes in temperature.

**Thermoreceptors in the skin**

The skin contains thermoreceptors, which are sensory receptors that respond to changes in temperature. These receptors are sensitive to both hot and cold stimuli, allowing us to perceive the temperature of objects that come into contact with our skin.

**How we feel hot and cold**

When we touch something hot, the thermoreceptors in our skin send signals to the brain, which interprets these signals as a sensation of heat. Similarly, when we touch something cold, the thermoreceptors signal the brain, leading to a sensation of cold.

**Role of skin in regulating body temperature**

In addition to detecting external temperatures, the skin also plays a crucial role in regulating our body temperature. When we are exposed to hot conditions, the skin helps dissipate heat through processes like sweating. On the other hand, in cold conditions, the skin constricts blood vessels to conserve heat and maintain our body temperature.

**Conclusion**

In conclusion, the skin is the sense organ that allows us to feel hot things and cold things through specialized thermoreceptors. Its ability to detect changes in temperature not only helps us perceive the world around us but also plays a vital role in maintaining our body temperature.