Body Movements is Chapter 8 taken from JKBOSE Class 6 Science. Today in this blog post I will detail you with Body Movements Class 6th Question Answers. You will get short notes and question answers in the chapter in this post. The previous post was about Chapter 7 Getting to Know Plants Question Answers. Let’s begin:
Body Movements Class 6th Question Answers
Overview of Chapter
- HUMAN BODY AND ITS MOVEMENT.
- Parts of Human Skeleton.
- Types of Joints in the Human Body
- GAIT OF ANIMALS.
- HUMAN BODY AND ITS MOVEMENT: The change in the position of a body or any part of the body is called movement. Our body undergoes movements most of the time. For example, while chewing, breathing, writing, walking, bathing, turning our head, blinking our eyes etc. The movements in our body are caused due to bones and muscles of our body.
- Human Skeleton: The framework of bones and cartilage which supports our body is called the skeleton. There are 206 bones in our skeleton. The human skeleton consists of the following bones:
- Skull: The bony part of our head is called the skull. It is made up of 22 bones.
- Backbone: The long hollow, rod-like structure running from the neck to the hips inside our body is called the backbone. It is made up of 33 small bones.
- Rib Cage: The hollow bony structure formed by the ribs is called a rib cage. Ribs are curved bones in our chest. There are 12 pairs of ribs in our chest.
- Shoulder Bones: The bones which attach our arms to our shoulders are called shoulder bones. These are two in number i.e. collarbone and shoulder blades.
- Pelvic or Hip Bone: The pelvic or hip bone forms a large, basin-shaped frame at the lower end of the backbone, to which legs are attached.
- Bones of Hand: Our hand is made up of three parts i.e. wrist, palm and fingers.
- Types of Joints: Following are two main types of joints in our body.
- Moveable Joints: a) Ball and socket joints b) Pivotal Joint c) Hinge Joint
- Fixed Joint.
- Gait of Animals: Different animals use different organs to move from one place to another, so gait also differs in different animals. Example. Birds fly, Fish swim, Human walk, cockroaches move as well as fly, and snakes crawl.
Body Movements Class 6 Questions
1. Fill in the blanks
- Joints of the bones help in the ________ of the body.
- A combination of bones and cartilage forms the ________ of the body.
- The bones of the elbow are joined by ________ joint.
- The contraction of the ________ pulls the bones during movement.
- An adult human has ________ bones whereas a baby has more than ________ bones. (JKBOSE)
- In water birds, ________, ________ present help them to swim.
- Amoeba moves with the help of ________.
- Joints of the bones help in the movement of the body.
- A combination of bones and cartilage forms the skeleton of the body.
- The bones of the elbow are joined by a hinge joint.
- The contraction of the muscles pulls the bones during movement.
- An adult human has 206 bones whereas a baby has more than 300 bones. (JKBOSE)
- In water birds, webbed feet, and waterproof feathers present help them to swim.
- Amoeba moves with the help of Pseudopodia.
2. Indicate True(T) and False (F) among the following sentences.
- The movement and locomotion of all animals are exactly the same. (False)
- The cartilages are harder than bones. (False)
- The finger bones do not have joints (False)
- The forearm has two bones. (True)
- Cockroaches have an outer skeleton. (True)
3. Match the items in column I with one or more items in Column II.
|Column I||Column II|
|Upper Jaw||Have fins on the body|
|Fish||Has an outer skeleton|
|Ribs||Can fly in the air|
|Snail||Is an immovable joint|
|Cockroach||Protects the heart|
|Shows very slow movement|
|Have a streamlined body|
|Column I||Column II|
|Upper Jaw||Is an immovable joint|
|Fish||Have a streamlined body, Have fins on the body|
|Ribs||Protects the heart|
|Snail||Shows very slow movement|
|Cockroach||Can fly in the air. Has an outer skeleton|
4. Answer the following:
a. What is a ball and socket joint?
Ans. It is the type of joint in which the rounded end of one bone fits into the hollow space of the other bone. This type of joint allows movement in all directions. For example, a joint between the shoulder and arms and thigh and hip are ball and socket joints.
b. Which of the skull bones are movable?
Ans. The lower jaw of the skull is movable. All other bones of the skull are fixed.
c. Why can our elbow not move backwards?
Ans. Our elbow cannot move backward because it has a hinge joint which only allows back-and-forth movement of the joint in the front direction.
d. How many vertebrae join to form the vertebral column in a human being? (JKBOSE)
Ans. There are 33 vertebrae paced one over the other in the vertebral column of a human being.
e. What are the floating ribs? (JKBOSE)
Ans. The last two ribs of the rib cage are called floating ribs because they are connected to the backbone but their front end remains free in the abdomen.
5. What kind of movements are seen in (JKBOSE)
a) Earthworm moves by contraction and expansion of body muscles.
b) Snail moves slowly with help of feet and muscles attached to it.
c) Cockroach can walk, climb and fly up to a short distance.
d) Snake crawls and slithers making loops in a curvy form and moving very fast.
e) Birds walk with feet as well as fly with wings.
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