What's covered
Skeleton and muscles15
Heart and lungs14
Sample questions
A taste of the 29 questions in this topic — answers marked. Sign up to practise the full set with spaced repetition.
1Heart and lungs
What is the main job of the heart?
- •To absorb oxygen from the air
- •To produce blood cells
- ✓To pump blood around the body
- •To remove carbon dioxide from the lungs
2Skeleton and muscles
Which bone protects the brain?
- •Femur
- •Rib cage
- ✓Skull
- •Spine
3Heart and lungs
How do you measure your pulse to find your heart rate?
- ✓Count the beats felt at the wrist or neck for one minute
- •Measure how fast you are breathing
- •Place your hand on your chest and count chest rises
- •Use a thermometer to check body temperature
4Skeleton and muscles
Which bone is the longest in the human body?
- ✓Femur (thigh bone)
- •Fibula (outer lower leg)
- •Humerus (upper arm)
- •Tibia (shin bone)
5Heart and lungs
Why does heart rate increase during exercise?
- •To lower blood pressure and prevent the risk of fainting during effort
- •To reduce the amount of oxygen being used by the working muscles
- •To slow breathing rate and conserve energy for the effort ahead
- ✓Working muscles need more oxygen and produce more carbon dioxide
6Skeleton and muscles
What are the four main functions of the skeleton?
- •Balance, strength, speed, coordination
- •Breathing, digestion, circulation, temperature
- •Support, flexibility, energy storage, cooling
- ✓Support, protection, movement, blood cell production
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