Warm receptors are specialized nerve endings in the skin that detect changes in temperature, specifically warmth. They respond to temperatures above the body's normal range, typically around 30°C (86°F) and higher. These receptors help the body sense and react to heat, playing a crucial role in thermoregulation. When warm receptors are activated, they send signals to the brain, which interprets these signals as the sensation of warmth. This process is essential for maintaining homeostasis, allowing the body to adjust to varying environmental temperatures and avoid overheating, which can be harmful to overall health.