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Explain what is being illustrated in this figure.

Explain what is being illustrated in this figure.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**Image Transcription for Educational Website:** **Title:** Understanding Thermoregulation in Bluefin Tuna **Description:** The image provides data on the bluefin tuna, *Thunnus thynnus*, focusing on its ability to regulate muscle temperature in relation to water temperature. This is a thermoregulatory adaptation that impacts the species' heat budget. **Graph Explanation:** - **Axes:** - The x-axis represents water temperature (°C), ranging from 5°C to 30°C. - The y-axis represents muscle temperature (°C), ranging from 15°C to 35°C. - **Data Points:** - Each dot on the graph represents observed values of muscle temperature corresponding to specific water temperatures. - **Trend Line:** - The equation \( T_m = 25.3 + 0.24 T_w \) is provided, showing a linear relationship between muscle temperature (\( T_m \)) and water temperature (\( T_w \)). - **Interpretation:** - The slope of the trend line (0.24) shows that muscle temperature increases more gradually than water temperature, indicating some level of endothermic regulation. - The muscle temperature consistently remains higher than the water temperature, suggesting that bluefin tuna can generate and retain body heat internally, an adaptation that allows them to maintain higher levels of activity in cooler waters. **Regulatory Process:** This graph illustrates the bluefin tuna's ability to regulate its internal environment through endothermy, aiding in functions such as muscle efficiency and agility in varying temperature conditions. The ability to keep muscle temperature above that of the surrounding water implies controlled heat generation and retention, facilitating survival and functionality across diverse marine environments. **Conclusion:** Bluefin tuna demonstrate partial endothermy, allowing them to regulate heat through physiological mechanisms. This adaptation impacts their heat budget, enhancing survival and performance in a wide range of aquatic temperatures.
Transcribed Image Text:**Image Transcription for Educational Website:** **Title:** Understanding Thermoregulation in Bluefin Tuna **Description:** The image provides data on the bluefin tuna, *Thunnus thynnus*, focusing on its ability to regulate muscle temperature in relation to water temperature. This is a thermoregulatory adaptation that impacts the species' heat budget. **Graph Explanation:** - **Axes:** - The x-axis represents water temperature (°C), ranging from 5°C to 30°C. - The y-axis represents muscle temperature (°C), ranging from 15°C to 35°C. - **Data Points:** - Each dot on the graph represents observed values of muscle temperature corresponding to specific water temperatures. - **Trend Line:** - The equation \( T_m = 25.3 + 0.24 T_w \) is provided, showing a linear relationship between muscle temperature (\( T_m \)) and water temperature (\( T_w \)). - **Interpretation:** - The slope of the trend line (0.24) shows that muscle temperature increases more gradually than water temperature, indicating some level of endothermic regulation. - The muscle temperature consistently remains higher than the water temperature, suggesting that bluefin tuna can generate and retain body heat internally, an adaptation that allows them to maintain higher levels of activity in cooler waters. **Regulatory Process:** This graph illustrates the bluefin tuna's ability to regulate its internal environment through endothermy, aiding in functions such as muscle efficiency and agility in varying temperature conditions. The ability to keep muscle temperature above that of the surrounding water implies controlled heat generation and retention, facilitating survival and functionality across diverse marine environments. **Conclusion:** Bluefin tuna demonstrate partial endothermy, allowing them to regulate heat through physiological mechanisms. This adaptation impacts their heat budget, enhancing survival and performance in a wide range of aquatic temperatures.
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