‘रचना-प्रयोग’ का मुख्य उद्देश्य क्या है?

व्याकरण का व्यावहारिक प्रयोग सिखाना

‘द्वितीयः’ किस प्रकार की संख्या है?

क्रमवाचक (दूसरा)

What are the effects of exercise on the muscular system?

It increases muscle size, strength, tone and endurance and improves the blood supply to the muscles.

How does exercise benefit the respiratory system?

It increases lung capacity and the efficiency of breathing, improving the exchange of oxygen and carbon dioxide.

Differentiate between short-term and long-term effects of exercise.

Short-term effects are immediate, like increased heart and breathing rate; long-term effects are lasting, like a stronger heart and greater endurance.

What are the effects of exercise on the muscular system?

It increases muscle size, strength, tone and endurance and improves the blood supply to the muscles.

How does exercise benefit the respiratory system?

It increases lung capacity and the efficiency of breathing, improving the exchange of oxygen and carbon dioxide.

Differentiate between short-term and long-term effects of exercise.

Short-term effects are immediate, such as a faster heartbeat and breathing; long-term effects are lasting, such as a stronger heart and greater endurance.

How does exercise benefit the nervous system?

It improves coordination, reaction time, balance and mental alertness.

What is stroke volume?

The amount of blood pumped out by the heart in a single beat, which increases with regular exercise.

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Chapter 3: Effects of Exercise on the Body SystemsClass 10 Health and Physical Education — summary, notes, extra questions & MCQ quiz

Q: How does regular exercise affect the heart?

It strengthens the heart muscle, increases stroke volume, lowers the resting heart rate and improves circulation, reducing the risk of heart disease.

Q: How does regular exercise affect the heart?

It strengthens the heart muscle, increases the stroke volume, lowers the resting heart rate and improves circulation, reducing the risk of heart disease.

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Regular exercise affects the heart by:

Summary

Regular exercise produces beneficial changes in every system of the body, and this chapter studies the most important of them. On the muscular system, exercise increases muscle size, strength, tone and endurance, and improves the supply of blood to working muscles. On the circulatory system, it strengthens the heart, increases stroke volume, lowers the resting heart rate and improves blood circulation, reducing the risk of heart disease. On the respiratory system, it increases lung capacity, the efficiency of breathing and the exchange of oxygen and carbon dioxide. Exercise also improves the working of the digestive and excretory systems, strengthens bones and joints, and benefits the nervous system by improving coordination, reaction time and mental alertness. The chapter distinguishes immediate (short-term) effects, such as faster heartbeat and breathing, from long-term effects, such as a stronger heart and greater endurance, and concludes that regular physical activity keeps the body systems healthy and efficient throughout life.

Effects on the muscular systemEffects on the circulatory systemEffects on the respiratory systemShort-term vs long-term effectsExercise and the nervous system

Key terms

Stroke volume

The amount of blood pumped by the heart in one beat.

Resting heart rate

The number of heartbeats per minute at rest.

Lung capacity

The total amount of air the lungs can hold.

Muscle tone

The slight, continuous firmness of healthy muscles.

Short-term effects

Immediate body changes during exercise, like faster breathing.

Long-term effects

Lasting changes from regular exercise, like a stronger heart.

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Stroke volume

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The amount of blood pumped by the heart in one beat.

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