Class 5 Science Human Body Bones and Muscles Worksheet

Class 5 Science Human Body Bones and Muscles Worksheet

 

Section A: Fill in the Blanks (10 marks – 1 mark each)

1. A newborn baby has around ________ bones while an adult has ________ bones in the body.
2. The hardest substance in the human body is ________.
3. Bone marrow is found in the ________ bones of the body and produces new ________ cells.
4. The human skeleton is made up of the skull, spine or backbone, ________ cage, and ________.
5. The spine consists of ________ small bones called vertebrae.
6. Cartilage is a ________ elastic tissue found at the tip of our nose and in the ears.
7. The two lowest pairs of ribs that are not attached to the breastbone are called ________ ribs.
8. ________ are strong fibres that bind muscles to bones.
9. There are about ________ muscles in the human body.
10. Muscles that work automatically without our control are called ________ muscles.

 

1. Write T for True and F for False:

1. The upper jaw is movable while the lower jaw is fixed. ______
2. Bones make up approximately 14% of our total body weight. ______
3. The femur is the shortest bone in the human body. ______
4. Cardiac muscles are found only in the heart. ______
5. Ball and socket joints allow movement in all directions. ______

Section C: Multiple Choice Questions (10 marks – 1 mark each)

1. The skull consists of how many bones?
   • (a) 20
   • (b) 22
   • (c) 24
   • (d) 26
2. Which type of joint is found in the elbow?
   • (a) Ball and socket joint
   • (b) Hinge joint
   • (c) Pivot joint
   • (d) Gliding joint
3. Bones are mainly composed of:
   • (a) Only calcium
   • (b) Only phosphate
   • (c) Calcium and phosphate
   • (d) Iron and magnesium
4. The smallest bone in the human body is found in the:
   • (a) Hand
   • (b) Foot
   • (c) Ear
   • (d) Nose
5. Which type of muscles are also called striped muscles?
   • (a) Smooth muscles
   • (b) Cardiac muscles
   • (c) Skeletal muscles
   • (d) Involuntary muscles
6. The joints between the bones of the skull are:
   • (a) Movable joints
   • (b) Immovable joints
   • (c) Hinge joints
   • (d) Gliding joints
7. How many pairs of ribs are there in the human body?
   • (a) 10
   • (b) 11
   • (c) 12
   • (d) 14
8. Which joint allows us to turn our head from side to side?
   • (a) Hinge joint
   • (b) Ball and socket joint
   • (c) Pivot joint
   • (d) Gliding joint
9. The tissue that joins bones at joints is called:
   • (a) Tendon
   • (b) Ligament
   • (c) Cartilage
   • (d) Muscle
10. Biceps and triceps are examples of:
    • (a) Smooth muscles
    • (b) Cardiac muscles
    • (c) Skeletal muscles
    • (d) Involuntary muscles

Section D: Short Answer Questions (5 marks – 1 mark each)

1. What are the two main functions of the skeleton? (1 mark)
2. What is the difference between compact bone and spongy bone? (1 mark)
3. Name any two places where ball and socket joints are found in the human body. (1 mark)
4. Why are smooth muscles called involuntary muscles? (1 mark)
5. How do muscles work in pairs? Explain with the example of biceps and triceps. (1 mark)