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Bones, Muscles and Postures Class 2 Notes Science
| Table of contents |
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| Introduction |
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| Bones |
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| Joints |
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| Muscles |
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Introduction
Our body has both hard and soft parts. The hard parts are the bones while the soft parts are the muscles. Our skin covers both these parts.
Bones, muscles, and joints hold our body together and support freedom of movement.
Bones
Bones provide support for our bodies and help form our shape.
- Look at the picture shown below. It shows the various bones of our body.
- All our bones together make up the skeleton. There are 206 bones in our body.
The human skeleton
- Bones give shape to our body. Our backbone helps us to stand straight.
- Bones also protect the soft parts inside our body.
- For example, our ribs protect our heart and lungs. Our skull protects our brain.
Question for Chapter Notes: Bones, Muscles & Postures
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Which part of our body protects our heart and lungs?View Solution
Joints
The place where two or more bones are joined together is called a joint.
- Take a look at the picture shown below. Do you notice that some bones are joined together?
Joints in our body - Look at the following pictures now. At each of these joints, we can bend or turn our body in many ways.
Some joints of our body
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Muscles
The bones cannot move on their own. The muscles help them to move. They pull at the bones to make them move. The muscles cover the bones and are fixed to them.
Muscles of the Human Body
- Some muscles of our bodywork all the time. The muscles of the lungs which help us to breathe, work non-stop.
- Our heart is made up of strong muscles. These muscles also work without stopping throughout our life.
The Heart is made up of Muscles
- Together, our bones and muscles help us to carry out all our activities like working and playing.
Together, our bones and muscles help us to carry out all our activities like working and playing. - We should do regular exercise and eat healthy food to make our bones and muscles strong. Jogging and running are good for healthy bones and muscles. Healthy bones and muscles help us to work and play without getting tired.
Question for Chapter Notes: Bones, Muscles & Postures
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Which part of the body helps bones move?View Solution
The document Bones, Muscles and Postures Class 2 Notes Science is a part of the Class 2 Course Science for Class 2.
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FAQs on Bones, Muscles and Postures Class 2 Notes Science
| 1. What are the main functions of bones? |  |
| 2. How many bones are there in the human body? | |
Ans. The human body has a total of 206 bones. These bones are divided into two main categories: axial skeleton (which includes the skull, vertebral column, and rib cage) and appendicular skeleton (which includes the bones of the limbs and the girdles that connect the limbs to the axial skeleton).
| 3. What are joints and what is their role in the body? | |
Ans. Joints are the points where two or more bones meet. They allow for movement and flexibility in the body. Joints can be classified into three main types: fibrous joints (immovable), cartilaginous joints (slightly movable), and synovial joints (freely movable). Synovial joints, such as the knee and shoulder joints, are the most common type of joint in the body.
| 4. How do muscles work in conjunction with bones and joints? | |
Ans. Muscles work in conjunction with bones and joints to produce movement in the body. Muscles are attached to bones by tendons, which allow the muscles to exert force and move the bones. When a muscle contracts, it pulls on the bone, causing movement at the joint. The coordination between muscles, bones, and joints allows for a wide range of movements, such as walking, running, and lifting objects.
| 5. What are some common postural problems and how can they be corrected? | |
Ans. Common postural problems include rounded shoulders, forward head posture, and swayback posture. These issues can be corrected through various methods, such as exercises to strengthen weak muscles and stretch tight muscles, improving body awareness and alignment, using ergonomic equipment, and practicing good posture habits in daily activities. It is important to consult with a healthcare professional or physical therapist for a personalized assessment and treatment plan for specific postural problems.
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