The human body
The body is a set of systems that each do one job and hand the result to the next. This course walks through them in the order they depend on each other, from cells up to whole systems.
What you'll learn
14 chapters, then the quiz
- 01How the body is organisedCells, tissues, organs, systems.
- 02Cells and tissuesThe unit everything is built from.
- 03The skeletonStructure, protection and blood production.
- 04MusclesThree types, one job.
- 05Heart and circulationThe pump and its two circuits.
- 06BloodWhat is actually in it.
- 07Lungs and breathingGetting oxygen in and carbon dioxide out.
- 08DigestionFrom mouth to bloodstream.
- 09Kidneys and liverTwo very different filters.
- 10The nervous systemSignals, reflexes and control.
- 11The brainThree parts and what each does.
- 12HormonesSlow messages through the blood.
- 13Skin and sensesThe border and the input channels.
- 14The immune systemTwo layers of defence.
More science tests
See all →- Medium
Space and astronomy
The solar system, the scale of it, and the forces holding it together.
8 questions7 min - Medium
Physics basics
Motion, forces, energy and waves, and the units that hold them together.
8 questions7 min - Medium
Engineering basics
Loads, materials, mechanisms and circuits, and the habit of designing for failure.
8 questions7 min