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KS3 Biology:
Muscular System
+skeletal system



10 minutes maximum! (can you do it in 5?)



1. Muscles can produce forces. Which of these statements is correct?

  • A. Muscles contract, producing a pulling force.
  • B. Muscles contract, producing a pushing force.
  • C. Muscles expand, producing a pulling force.
  • D. Muscles expand, producing a pushing force.

2. What unit should be used to measure the size of a force produced by a muscle?

  • A. joule
  • B. newton
  • C. pascal
  • D. litre

3-5: These questions are about muscles in the arm.

There are two main muscles in the upper arm, the bicep and the tricep as shown here.


3. To make the arm bend as shown in the image, the...

  • A. bicep relaxes, the tricep contracts.
  • B. bicep contracts, the tricep contracts.
  • C. bicep relaxes, the tricep expands.
  • D. bicep contracts, the tricep relaxes.

4. There are many muscle pairs in the body like the bicep and tricep. They work against each other, moving our limbs. A pair of muscles like this is called...

  • A. a bicep pair
  • B. an antagonistic pair
  • C. an opposing pair
  • D. a deltoid pair

5. An athlete tears a bicep during excercise. This make it difficult and painful to...

  • A. bend the arm
  • B. straighten the arm
  • C. lift a straight arm overhead
  • D. rotate the arm

6. The human skeleton has many functions. Which of these is not a function of the skeleton?

  • A. protection
  • B. production of blood cells
  • C. storage of fats
  • D. support

7. What is the main function of the skull?

  • A. protect the brain
  • B. allow movement of the head
  • C. to support chewing food and digestion
  • D. provide blood for the brain

8. Which of these answers is a function of ribs in the skeleton?

  • A. to protect the spine
  • B. to allow movement in the upper body
  • C. to protect internal organs in the chest
  • D. to help the heart to pump blood

9. Muscles are connected to bones to produce forces and move the skeleton. What are the connective tissues called that join muscle to bone?

  • A. arteries
  • B. tendons
  • C. ligaments
  • D. nerves
10. The image shows a band of strong tissue in the body that connect bone to bone, prevent the knee joint from moving too far during running and walking. What is this tissue labelled X called?

knee joint

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  • A. an artery
  • B. a tendon
  • C. a ligament
  • D. a nerve