Learning Paths
Each learning path is one chapter: a guided route through a topic, one small course at a time. Pick a class to see its chapters in order.
Chapter 16
Locomotion and Movement
You pick up a bag, and your arm bends at the elbow. Under the skin, thousands of tiny threads slide past each other, and a bone turns at a joint. In this chapter you see how living things move, and why a sprinter and a long-distance runner use different muscle fibres. You build a muscle from its smallest unit, the sarcomere, and watch it shorten step by step. Then you count the 206 bones of the skeleton and learn how its joints and its disorders work. Python counts fibres, measures bands, steps through the cross-bridge cycle and totals the bones.
3 courses
