Oxford AQA IGCSE · CORE Biology (9221)
5 multiple-choice questions marked as you go, and 4 written questions with worked solutions. All on Temperature control.
When the core body temperature decreases below the optimum level, the thermoregulatory centre initiates several physiological responses. Which of the following describes a correct functional response to a decrease in core temperature?
In temperature control, the human body uses several mechanisms to reduce core temperature if it becomes too high. Which of the following describes a correct functional response to overheating?
The thermoregulatory centre in the brain monitors and controls body temperature. Where does it receive its primary information from?
When core body temperature increases, which set of physiological changes occurs to facilitate cooling through the skin?
When the core body temperature is too low, the thermoregulatory centre coordinates responses to generate or conserve heat. How does shivering contribute to this process?
When the core body temperature rises too high, the brain's thermoregulatory centre coordinates a response through the skin. Explain how vasodilation specifically assists in reducing core body temperature.
Write your answer out first, then check it against the worked solution.
Explain how the process of vasodilation helps to lower the core body temperature when a human is in a hot environment.
Write your answer out first, then check it against the worked solution.
The human body maintains a constant internal temperature of approximately \(37^{\circ}C\).
a) Name the part of the brain that monitors and controls body temperature.
b) If the core body temperature rises too high, the body uses vasodilation to help cool down. Explain how vasodilation results in a transfer of energy to the environment.
c) Explain why 'shivering' is an effective response when the core body temperature is too low.
Write your answer out first, then check it against the worked solution.
Temperature control is essential for maintaining a constant internal environment.
a) Explain how vasodilation and the production of sweat help the body to reduce its core temperature when it is too high.
b) Describe how the human body generates and conserves heat when the core temperature falls too low.
c) Identify the location of the coordination centre in the brain that monitors blood temperature.
Write your answer out first, then check it against the worked solution.
* The content provided by thinka is generated by AI and may not always be accurate or up-to-date. Please use it as a supplementary resource and verify with official materials.
This page can show you how a good answer looks. It cannot tell you what your answer was missing. thinka marks your written work against the real mark scheme in about 15 seconds.
Want more questions like these? Get a fresh set on this topic, marked as you go.
Practise More