Which of the following changes occur in the body to maintain homeostasis when you begin to exercise?

• A. Reduced blood flow to the skin to prevent heat loss
• B. Lowered body temperature to reduce metabolic rate
• C. Increased heart rate to supply more oxygen to muscles
• D. Decreased breathing rate to conserve energy

Answer: (C)

Verified step by step guidance

1. Understand the concept of homeostasis: Homeostasis refers to the body's ability to maintain a stable internal environment despite changes in external conditions. During exercise, the body undergoes several physiological changes to maintain homeostasis.
2. Identify the physiological demands of exercise: Exercise increases the demand for oxygen and nutrients in the muscles, and the body must adapt to meet these demands. This involves changes in cardiovascular and respiratory systems.
3. Analyze the options given: Consider each option and how it relates to the body's response to exercise. Reduced blood flow to the skin, lowered body temperature, and decreased breathing rate are not typical responses to exercise.
4. Focus on the correct physiological response: Increased heart rate is a key response during exercise. It helps to supply more oxygen and nutrients to the muscles, which is essential for maintaining energy production and performance.
5. Consider the role of increased breathing rate: Although not listed as the correct answer, increased breathing rate is also a typical response to exercise, as it helps to increase oxygen intake and carbon dioxide expulsion, supporting the increased metabolic demands.