NCERT Class 10 Health and Physical Education Effects of Physical Activities on Human Body Solutions

Short Intro

This chapter explains how regular physical activities, sports, games, and yoga positively affect different organ systems of the human body. It highlights the role of the muscular, respiratory, and circulatory systems in maintaining physical fitness and overall health. These solutions provide step-by-step explanations in simple English for better understanding and exam preparation.

Quick Information Box

Topic Details
Chapter Name Effects of Physical Activities on Human Body
Class 10
Subject Health and Physical Education
Main Systems Covered Muscular, Respiratory, Circulatory
Key Focus Benefits of Exercise and Yoga
Important Concept Physical activities improve body efficiency

Concepts Used (Topics Covered)

  • Organ systems of human body
  • Muscular system
  • Skeletal system
  • Respiratory system
  • Circulatory system
  • Muscle contraction
  • Oxygen debt
  • Vital capacity
  • Benefits of physical activities
  • Effects of yoga and suryanamaskar

Important Formulas

Energy Production Formula

Glucose+O2→CO2+H2O+ATP\text{Glucose} + O_2 \rightarrow CO_2 + H_2O + ATPGlucose+O2​→CO2​+H2​O+ATP

Vital Capacity Formula

VC=TV+IRV+ERVVC = TV + IRV + ERVVC=TV+IRV+ERV

Where:

  • VC = Vital Capacity
  • TV = Tidal Volume
  • IRV = Inspiratory Reserve Volume
  • ERV = Expiratory Reserve Volume

Questions and Step-by-Step Solutions with Explanation

Question 1

Give one example to show that organ systems work in unison. You may mention two or more organ systems to support your point.

Solution

Organ systems work together to perform body functions efficiently.

For example, while running:

  1. The muscular system helps in movement of legs and arms.
  2. The respiratory system supplies oxygen to the body.
  3. The circulatory system transports oxygen and nutrients to muscles through blood.
  4. The nervous system controls body coordination and movements.

Thus, different organ systems work together in unison for smooth body functioning.

Question 2

Ravi is a good athlete. Give one permanent effect of being an athlete on his muscular system and respiratory system.

Solution

Effect on Muscular System

Regular exercise increases muscle strength and muscle size.

Effect on Respiratory System

Regular physical activities increase lung capacity and improve breathing efficiency.

Thus, athletes develop stronger muscles and healthier lungs.

Question 3

“Physical activities are necessary for developing a healthy body and healthy mind.” Give two examples in support of this statement.

Solution

  1. Regular physical activities strengthen muscles and bones, making the body fit and active.
  2. Yoga and exercise reduce stress and improve mental health and concentration.

Therefore, physical activities are important for both physical and mental wellbeing.

Question 4

Complete the sentence —
The respiratory system gets positively affected by undertaking yoga exercises regularly because ____________.

Solution

The respiratory system gets positively affected by undertaking yoga exercises regularly because yoga improves lung power and breathing efficiency.

Question 5

Mention two changes that take place in each of the circulatory and respiratory systems due to regular physical activities.

Solution

Changes in Circulatory System

  1. Increase in stroke volume of the heart.
  2. Decrease in resting heart rate.

Changes in Respiratory System

  1. Increase in lung capacity.
  2. Strengthening of diaphragm and chest muscles.

Question 6

Prepare a health profile of your friends who indulge in games and yoga regularly.

Solution

| Name | Physical Activity | Duration | Benefits Observed |
|—|—|—|
| Aman | Football | 1 hour daily | Better stamina and fitness |
| Rahul | Yoga and Pranayam | 45 minutes daily | Better concentration and flexibility |
| Sneha | Running | 30 minutes daily | Strong muscles and healthy body |

Motivation Factors

  • Interest in sports
  • Desire to stay fit
  • Encouragement from teachers and parents
  • Participation in competitions

Regular physical activities help students remain healthy and active.

Common Mistakes

  • Confusing voluntary and involuntary muscles
  • Forgetting the role of oxygen in energy production
  • Writing incomplete definitions of vital capacity
  • Mixing respiratory and circulatory system functions
  • Ignoring benefits of yoga in answers

Exam Tips

  • Learn definitions of ATP, oxygen debt, and vital capacity.
  • Write answers in points for better presentation.
  • Use diagrams wherever possible.
  • Remember differences between arteries and veins.
  • Revise benefits of physical activities regularly.

Practice MCQs

1. Which organ pumps blood throughout the body?

A. Lung
B. Kidney
C. Heart
D. Liver

Answer:

C. Heart

2. Which gas is required for oxidation of food?

A. Nitrogen
B. Carbon dioxide
C. Oxygen
D. Hydrogen

Answer:

C. Oxygen

3. Which exercise improves lung power?

A. Weight lifting
B. Pranayam
C. Sleeping
D. Reading

Answer:

B. Pranayam

4. Which muscles are voluntary muscles?

A. Cardiac muscles
B. Smooth muscles
C. Skeletal muscles
D. Digestive muscles

Answer:

C. Skeletal muscles

5. What is the normal resting heart rate?

A. 50 beats/minute
B. 72 beats/minute
C. 90 beats/minute
D. 120 beats/minute

Answer:

B. 72 beats/minute

FAQ Section

Q1. What is oxygen debt?

Oxygen debt is the shortage of oxygen created during heavy exercise when oxygen intake is less than oxygen requirement.

Q2. What is ATP?

ATP (Adenosine Triphosphate) is the energy currency of the body.

Q3. How does yoga help the body?

Yoga improves flexibility, blood circulation, breathing efficiency, and mental health.

Q4. What is vital capacity?

Vital capacity is the maximum amount of air inhaled and exhaled with maximum effort.

Q5. Why are physical activities important?

Physical activities improve strength, stamina, mental health, and overall fitness.

For more Class 10 Physical Education notes, MCQs, important questions, and chapter-wise solutions, visit

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