The human body is made up of many parts. Each part has a special job to do. These parts that do particular jobs are called organs. When a group of organs work together to perform a particular task, we call them an organ system. Organ systems keep our body working and help us live, grow, and play.
Human Body
External Organs (Outside the Body)
External organs are the parts of the body that we can see and touch. They help us do things such as moving, talking, eating and sensing the world around us.
Some External Organs and Their Uses
Ear
Helps us hear the sounds around us.
We use our ears to listen to music, talk to others, and hear different noises in the environment.
Ear
Nose
Helps us smell different things, such as flowers or food.
We also use our nose to breathe in air.
Nose
Mouth
Helps us eat and drink food.
We use our mouth to speak, smile, and make different sounds.
Mouth
Hands
Help us hold, carry, and pick up things.
We also use our hands to write, draw, play and do many everyday tasks.
Hands
Knee
Knees help us bend our legs when we sit, squat, or kneel.
They are important for walking and moving around.
Knee
Head
The head is the top part of our body where the eyes, ears, nose and mouth are.
The head contains the brain, which helps us think and remember.
Head
Eye
Helps us see things around us - people, colours, books and places.
We use our eyes to read, watch, and look at pictures.
Eye
Arm
Helps us lift and carry objects.
Arms are also used for hugging, playing and doing many activities.
Arm
Leg
Helps us walk, run and jump.
Legs help us stand and move from place to place.
Leg
Foot
Helps us stand and keep balance.
We use our feet to walk, run and jump.
Foot
Neck
The neck joins the head to the rest of the body.
It enables us to move our head in different directions.
Chest
The chest is the front part of our body that holds important organs like the heart and lungs behind the ribs.
Chest
Internal Organs (Inside the Body)
Internal organs are the parts that are inside our body. We cannot see them from outside, but they do very important work to keep us alive and healthy.
Some Internal Organs of Human Body
Some Internal Organs and Their Uses
Brain - Helps us think, learn, remember and control the movements of the body.
Brain
Lungs - Help us breathe in fresh air and send oxygen to the blood.
Lungs
Heart - Pumps blood to all parts of the body so that food and oxygen reach our cells.
Heart
Stomach - Helps to digest the food we eat so that our body can use the nutrients.
Stomach
MULTIPLE CHOICE QUESTION
Try yourself: Which organ is responsible for pumping blood inside our body?
A
Brain
B
Heart
C
Lungs
D
Stomach
Correct Answer: B
- The heart is responsible for pumping blood inside our body. - It is made up of muscles that contract and relax to push blood throughout the body.
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Our Five Sense Organs
Sense organs are the parts of our body that help us see, hear, smell, taste and feel things. We have five main sense organs: the eyes, ears, nose, tongue and skin.
The five senses
Nose - Helps us smell. We can smell pleasant things like flowers and also bad smells.
Ears - Help us hear. We can hear soft sounds and loud sounds.
Skin - Helps us feel by touch. We can feel if something is hot, cold, soft, hard, smooth or rough.
Tongue - Helps us taste food. The tongue can tell whether food is sweet, salty, sour or bitter.
Eyes - Help us see people, colours, books and everything around us.
MULTIPLE CHOICE QUESTION
Try yourself: Which sense organ helps us to taste different food items?
A
Eyes
B
Ears
C
Nose
D
Tongue
Correct Answer: D
- The tongue is the sense organ that helps us to taste different food items by detecting flavors through taste buds on its surface.
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Staying Healthy with Sports & Exercise
Exercise keeps our body fit, strong and healthy. Regular physical activity helps our heart, lungs, muscles and bones grow well.
Eat healthy food such as fruits, vegetables, milk, cereals and pulses.
Do physical activities every day like swimming, running, cycling and skipping.
Posture means how we sit, stand and walk.
Sit and stand straight to keep your body strong and healthy.
Here is an amazing video to help you learn more about our amazing body:
1. What are the main body parts that Class 2 students need to know for EVS?
Ans. The human body consists of the head, neck, trunk (chest and belly), and limbs (arms and legs). Each part has specific functions-the head contains the brain and sensory organs, the trunk houses vital organs like the heart and lungs, and limbs help us move. Students should learn to identify these external body parts and understand their basic roles in daily activities like eating, moving, and sensing the world around them.
2. How many bones does a human body have and why do we need them?
Ans. An adult human body contains 206 bones that form the skeletal system. Bones provide structure and support, allowing us to stand upright and maintain body shape. They protect vital organs such as the brain (skull), heart, and lungs (ribs). Bones also work with muscles to enable movement and produce blood cells. For Class 2 students, understanding that bones are the hard framework inside our body helps explain why we can move and stay strong.
3. What are the five senses and which body parts help us use them?
Ans. The five senses are sight, hearing, smell, taste, and touch. Eyes help us see, ears enable hearing, the nose detects smells, the tongue and mouth allow us to taste, and skin helps us feel textures and temperature. Each sense organ sends signals to the brain, which interprets them. Learning about sensory organs teaches Class 2 students how they interact with their environment and why protecting these body parts-like wearing helmets or sunglasses-matters for safety.
4. Why do we have muscles and what do they do in our body?
Ans. Muscles are tissues that contract and relax to create movement throughout the body. They work alongside bones to help us walk, run, jump, write, and perform daily tasks. Muscles also maintain posture, keep us warm, and protect internal organs. For Class 2 understanding, muscles are like elastic bands attached to bones; when they tighten, bones move. This simple concept helps students grasp why exercise and healthy food strengthen muscles for better movement and strength.
5. What organs are inside our body and what important jobs do they do?
Ans. Key internal organs include the heart (pumps blood), lungs (help us breathe), stomach (digests food), brain (controls thoughts and actions), and kidneys (filter waste). Each organ has a vital function keeping us alive and healthy. The heart and lungs work together to deliver oxygen; the stomach breaks down food for energy; the brain manages everything we do. Refer to mind maps and flashcards on EduRev to visualise how these organs work together as an interconnected system.
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