Thermoregulation Flashcard

Front

What is the definition of thermoregulation?

Back

The body's ability to maintain core body temperature within a narrow, optimal range, despite environmental changes

Front

What is the normal range for core body temperature in humans? Options: 35.0°C to 36.0°C (95.0°F to 96.8°F), 36.2°C to 37.6°C (97.0°F to 99.7°F), 38.0°C to 40.0°C (100.4°F to 104.0°F), 34.0°C to 35.5°C (93.2°F to 95.9°F)

Back

36.2°C to 37.6°C (97.0°F to 99.7°F)

Front

Which part of the brain is primarily responsible for controlling thermoregulation? Options: Cerebellum, Hypothalamus, Medulla oblongata, Thalamus

Back

Hypothalamus

Front

What is the main function of peripheral thermoreceptors?

Back

Sense external temperature changes in the skin

Front

When a deviation from the normal temperature range is detected, what does the hypothalamus do?

Back

Triggers responses to restore balance

Front

How do central thermoreceptors contribute to thermoregulation?

Back

They monitor the core body temperature in the hypothalamus.

Front

Explain how feedback mechanisms controlled by the hypothalamus help maintain body temperature when exposed to a cold environment.

Back

The hypothalamus receives input from thermoreceptors and triggers responses such as shivering and vasoconstriction to restore balance.

Front

Which of the following is the primary source of heat production in the human body? Muscle activity (shivering), Metabolism, Hormonal activity (thyroxine and epinephrine), Convection

Back

Metabolism

Front

Which process describes heat transfer without direct contact? Options: Conduction, Convection, Radiation, Evaporation

Back

Radiation

Front

Which mechanism of heat loss involves heat transfer through direct contact?

Back

Conduction