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Biology 105
Biology of Exercise
Spring 2003
1/15/03 Post-class outline
Learning objectives:
- What is exercise?
- How does the body respond to exercise?
- How is a constant internal environment (homeostasis) maintained in the face of the stress of exercise?
- What limits exercise?
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What is exercise?
How does the body respond to exercise?
| System | Response | Regulated Variable |
| Circulatory | Increased Heart Rate, Increased Blood Flow | Blood pressure |
| Respiratory | Increased Breathing Rate | Blood Oxygen level |
| Kidney | Conserve Salt and Water | Blood Volume and Salt concentration |
| Liver | Increased Glucose output | Blood Glucose level |
| Muscles | Contraction, relaxation | |
| Skeletal system | Movement, Increased load. | |
| Endocrine | Increased and decreased levels of hormones | |
| Skin | Increased Sweating | Body Temperature |
| Nervous | Increased and decreased activity | |
| Digestive | Decreased activity |
How is a constant internal environment (homeostasis) maintained in the face of the stress of exercise?
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