MCQ Detailed View

The human body maintains a relatively constant internal temperature despite changes in the surrounding environment. This process is called thermoregulation and is essential for normal physiological functions.

The normal body temperature of a healthy human is approximately 37 °C (98.6 °F). This temperature allows enzymes and metabolic processes to work efficiently. Small fluctuations may occur throughout the day due to factors such as physical activity, hormone levels, time of day, and emotional state, but the body has mechanisms to keep the temperature near 37 °C.

Temperature regulation is controlled by the hypothalamus, a part of the brain that acts as the body’s thermostat. When body temperature rises, mechanisms like sweating and vasodilation help cool the body. When temperature falls, processes like shivering and vasoconstriction help conserve heat.

Extremes of body temperature can be dangerous. Temperatures much below 35 °C can lead to hypothermia, and temperatures above 42 °C can cause hyperpyrexia, which may damage organs and enzymes. The body is unable to function properly at these extreme temperatures.

Understanding normal body temperature is part of human biology, particularly the study of homeostasis and physiology. It explains why the human body can adapt to minor environmental changes while maintaining stable internal conditions necessary for survival.

In summary, despite minor daily fluctuations, the human body temperature remains around 37 °C, ensuring all metabolic and enzymatic activities occur optimally. Maintaining this temperature is crucial for health and normal bodily functions