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Chapter Analysis
Intermediate12 pages • EnglishQuick Summary
The chapter discusses the effects of physical activities on the human body, focusing on both short-term and long-term impacts on major organ systems. It highlights the importance of physical activities in improving muscular strength, increasing lung capacity, enhancing circulatory efficiency, and positively affecting vital organs. The text also underscores the role of physical activities in maintaining a healthy body and mind, especially in the context of overall physical, mental, and emotional health.
Key Topics
- •Benefits of physical activities on the muscular system
- •Improvement in respiratory capacity
- •Enhancement of circulatory system efficiency
- •Effects on vital organ functions
- •Role of physical activities in mental and emotional health
- •Prevention of lifestyle diseases through exercise
- •Integration of organ systems for physical health
- •Yoga as a complementary physical activity
Learning Objectives
- ✓Understand the short-term and long-term effects of physical activities on organ systems
- ✓Identify how regular exercise benefits muscular and respiratory performance
- ✓Explain the role of physical activities in preventing heart disease
- ✓Discuss the importance of physical activities in maintaining overall health
- ✓Describe the interrelationship of organ systems during physical activities
- ✓Evaluate the benefits of exercise in enhancing mental and emotional well-being
Questions in Chapter
Give one example to show that organ systems work in unison. You may mention two or more organ systems to support your point.
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Ravi is a good athlete. Give one permanent effect of being an athlete on his muscular and respiratory system.
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“Physical activities are necessary for developing a healthy body and healthy mind.” Give two examples in support of this statement.
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Complete the sentence — The respiratory system gets positively affected by undertaking yoga exercises regularly because __________________.
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Mention two changes that take place in each of the circulatory and respiratory systems due to regular physical activities.
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Prepare a health profile of your friends who indulge in games and yoga regularly. What physical activities do they undertake regularly? What is the time duration? How do those who are physically active get motivated to play some games or exercise regularly?
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Additional Practice Questions
Explain how physical activities can help in preventing osteoporosis.
mediumAnswer: Physical activities, especially weight-bearing exercises, help in preserving bone mass and reducing the risk of osteoporosis by promoting bone density and strength.
How do regular physical activities affect the heart rate?
easyAnswer: Regular physical activities lead to a decrease in resting heart rate, as the heart becomes more efficient at pumping blood, requiring fewer beats to deliver the same amount of blood.
Describe the role of the respiratory system during intense physical activities.
mediumAnswer: During intense physical activities, the respiratory system increases the intake of oxygen to meet the elevated demand, enhancing lung capacity and efficiency. The exchange of gases in the alveoli is optimized to supply muscles with necessary oxygen.
What changes occur in muscle fibers due to regular physical activities?
hardAnswer: Regular physical activities cause muscle fibers to enlarge, increasing their size and strength by approximately 60%. The improvement in muscle tone and increase in muscle proteins contribute to overall muscle development.
List and explain the benefits of yoga on the circulatory system.
mediumAnswer: Yoga improves blood circulation, enhances the flexibility of blood vessels, reduces blood pressure, and increases the efficiency of the heart, which collectively aids in overall cardiovascular health.