KS3 Science Quiz - Skeleton, Joints and Muscles 01 (Questions)

This KS3 Science quiz asks questions about the skeleton, joints and muscles. Your skeleton has several different jobs - it supports the body, protects some vital organs, makes blood cells and allows you to move around. The bones of your skeleton are connected by fixed joints, hinged joints, ball and socket joints and partly-moving joints.

Bone is a living tissue made from calcium compounds and other minerals and is strong but slightly flexible. Your skull is made from several bones, joined firmly together - these are fixed joints.

Elsewhere in your body, the bones are joined more flexibly. At these flexible joints, the bones on opposite sides are held together by tough tissues called ligaments.

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Between the ends of the bones, there is a layer of cartilage, which is lubricated by synovial fluid. This helps to make the joint move smoothly and the cartilage prevents the bone end wearing away. The joint is moved by at least one pair of antagonistic muscles working against each other - one relaxes whilst the other contracts. A good example of this is the elbow joint. This is moved by the biceps and triceps muscles. The biceps contracts and the triceps relaxes to raise the forearm and vice-versa to lower it.

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1. Which of the following is NOT a function (job) of the skeleton?
[ ] A framework of bones
[ ] Protecting organs
[ ] Supporting the body
[ ] To allow movement
2. The function of the skull is .......
[ ] to allow movement of the neck
[ ] to allow you to hear
[ ] to allow you to see
[ ] to protect the brain
3. Which of the following are needed for healthy bones?
[ ] Calcium and vitamin C
[ ] Calcium and vitamin D
[ ] Iron and vitamin C
[ ] Iron and vitamin D
4. Bones are held together at a joint by .......
[ ] cartilage
[ ] ligaments
[ ] muscles
[ ] tendons
5. At a joint the ends of the bones are covered in .......
[ ] cartilage
[ ] fluid
[ ] muscles
[ ] tendons
6. Muscles are joined to the bones by .......
[ ] cartilage
[ ] ligaments
[ ] patellas
[ ] tendons
7. The elbow is a hinge joint. Which is the flexor muscle?
[ ] Biceps
[ ] Deltoid
[ ] Quadraceps
[ ] Triceps
8. Which is the extensor muscle in the arm?
[ ] Biceps
[ ] Deltoid
[ ] Quadraceps
[ ] Triceps
9. Antagonistic action of two muscles means .......
[ ] Both muscles contract
[ ] Both muscles relax
[ ] As one muscle contracts the other relaxes
[ ] Both muscles do nothing
10. Which of the following is NOT a bone in the arm?
[ ] Femur
[ ] Humerus
[ ] Radius
[ ] Ulna
KS3 Science Quiz - Skeleton, Joints and Muscles 01 (Answers)
1. Which of the following is NOT a function (job) of the skeleton?
[x] A framework of bones
[ ] Protecting organs
[ ] Supporting the body
[ ] To allow movement
A skeleton is a framework of bones but this is not its job, it is its description
2. The function of the skull is .......
[ ] to allow movement of the neck
[ ] to allow you to hear
[ ] to allow you to see
[x] to protect the brain
The bones of a baby's head are joined flexibly. This allows the head to slightly change shape and makes it easier for them to be born. As they grow, the skull bones grow by a small amount and join together solidly
3. Which of the following are needed for healthy bones?
[ ] Calcium and vitamin C
[x] Calcium and vitamin D
[ ] Iron and vitamin C
[ ] Iron and vitamin D
Calcium and vitamin D are found in eggs and milk
4. Bones are held together at a joint by .......
[ ] cartilage
[x] ligaments
[ ] muscles
[ ] tendons
If you injure a ligament, it can take many months for it to recover. This is unlike an injury to a muscle which normally only takes a few days to heal, depending on how bad the injury is and how healthy you are
5. At a joint the ends of the bones are covered in .......
[x] cartilage
[ ] fluid
[ ] muscles
[ ] tendons
The cartilage stops the bones rubbing on each other and wearing away
6. Muscles are joined to the bones by .......
[ ] cartilage
[ ] ligaments
[ ] patellas
[x] tendons
Tendon injuries can take many months to heal. In some cases, it can take over a year
7. The elbow is a hinge joint. Which is the flexor muscle?
[x] Biceps
[ ] Deltoid
[ ] Quadraceps
[ ] Triceps
This bends the arm by contracting
8. Which is the extensor muscle in the arm?
[ ] Biceps
[ ] Deltoid
[ ] Quadraceps
[x] Triceps
This straightens the arm by contracting
9. Antagonistic action of two muscles means .......
[ ] Both muscles contract
[ ] Both muscles relax
[x] As one muscle contracts the other relaxes
[ ] Both muscles do nothing
Antagonistic means working against each other
10. Which of the following is NOT a bone in the arm?
[x] Femur
[ ] Humerus
[ ] Radius
[ ] Ulna
The femur is in the leg - it's the thigh bone