13.1
The skeleton
The skeleton's four jobs, the main bones, what is inside a bone, and what makes bones strong.
13.2
Joints and muscles
Hinge and ball-and-socket joints, what is inside a joint, and how muscles work in antagonistic pairs, like the biceps and triceps.
13.3
Levers and muscle forces
Bones as levers, the moment of a force, and measuring the forces muscles exert.
13.4
Movement and healthy bones
Muscles and bones working together, the energy muscles need, bones through life, and injuries and how they mend.
Daily 5
Five quick diagram questions a day from this unit. The ones you get wrong come back sooner. Progress saves in this browser.
What this unit covers
Mapped to the KS3 national curriculum (Biology: skeletal and muscular systems).
| Programme of study | Lesson |
|---|---|
| the structure and functions of the human skeleton, to include support, protection, movement and making blood cells | 13.1 |
| biomechanics – the interaction between skeleton and muscles, including the measurement of force exerted by different muscles | 13.3, 13.4 |
| the function of muscles and examples of antagonistic muscles | 13.2, 13.4 |
Next at GCSE