Summary of Body Movements chapter from class 6 NCERT
Answers
Answer:
Introduction to Body movements
Movements
The ability of organisms to change position, by using their body parts, is called movement.
To know more about Movements, visit the link below;
Human Body and Its Movements
Types of Movements
Skeletal System
Skeleton
Skeleton is the internal structure in organisms, which helps in bringing about movement.
It forms a framework that gives the shape of the body and provides support to organisms.
The skeleton is made up of bones.
Different kinds of bones are joined to each other in a particular manner.
These joints facilitate various types of movements.
In higher animals, bones, muscles and cartilage together make the movement possible.
Muscles
Muscles are parts of the body that help in bringing about movement.
Muscles may be attached to bones, (humans) or may work alone (earthworm).
Cartilage
Part of the skeleton that is not hard as bones and can be bent, is cartilage.
They are found in the upper part of the ear, the tip of the nose and at the tips of long bones.
Joints
Joints are the points where two parts of the skeleton are fitted together to make movement possible.
Examples are hip joint, elbow joint, knee joint, etc
Ball and Socket Joint
Ball and socket joint, where the rounded end of one bone fits into the cavity of the other bone.
It brings in movement in all directions.
It is seen in the hips and shoulders of the human body.
CBSE Class 6 Science Notes Chapter 8 - 1
Pivot Joint
A pivotal joint is where a cylindrical bone rotates in a ring.
It joins the neck to the head.
It allows to bend the head forward and backwards and turn the head to our left or right.Hinge Joints
Hinge joints bring about movement in only back and forth direction.
The knees and elbows have hinge joints.
The following image is a hinge joint in the elbow.
CBSE Class 6 Science Notes Chapter 8 - 3
Fixed Joints
Fixed joints are immovable joints because the bones are joined together.
Such joints are found in the skull.
Answer:
Introduction to Body movements
Movements
The ability of organisms to change position, by using their body parts, is called movement.
To know more about Movements, visit the link below;
Human Body and Its Movements
Types of Movements
Skeletal System
Skeleton
Skeleton is the internal structure in organisms, which helps in bringing about movement.
It forms a framework that gives the shape of the body and provides support to organisms.
The skeleton is made up of bones.
Different kinds of bones are joined to each other in a particular manner.
These joints facilitate various types of movements.
In higher animals, bones, muscles and cartilage together make the movement possible.
Muscles
Muscles are parts of the body that help in bringing about movement.
Muscles may be attached to bones, (humans) or may work alone (earthworm).
Cartilage
Part of the skeleton that is not hard as bones and can be bent, is cartilage.
They are found in the upper part of the ear, the tip of the nose and at the tips of long bones.
Joints
Joints are the points where two parts of the skeleton are fitted together to make movement possible.
Examples are hip joint, elbow joint, knee joint, etc
Ball and Socket Joint
Ball and socket joint, where the rounded end of one bone fits into the cavity of the other bone.
It brings in movement in all directions.
It is seen in the hips and shoulders of the human body.
CBSE Class 6 Science Notes Chapter 8 - 1
Pivot Joint
A pivotal joint is where a cylindrical bone rotates in a ring.
It joins the neck to the head.
It allows to bend the head forward and backwards and turn the head to our left or right.Hinge Joints
Hinge joints bring about movement in only back and forth direction.
The knees and elbows have hinge joints.
The following image is a hinge joint in the elbow.
CBSE Class 6 Science Notes Chapter 8 - 3
Fixed Joints
Fixed joints are immovable joints because the bones are joined together.
Such joints are found in the skull.
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