ScienceThe ProfessorBeginner
Human Anatomy: Built to Move, a free science course on Tomo

Human Anatomy: Built to Move

Discover the mechanical genius beneath your skin. Learn how your bones, muscles, lungs, and heart coordinate to move you through the world.

Like Duolingo, but for Human Anatomy: Built to Move. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.

A short one: 12 levels across 2 sections, about 24 minutes end to end, roughly 5 days at five minutes a day. It moves through The Mechanical Frame and The Pressure Systems. It starts from scratch.

12 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Barnaby the Badger, the guide who teaches the Human Anatomy: Built to Move course
Human Anatomy: Built to Move
with Barnaby the Badger
12
Levels
2
Sections
5
Min/day
What you'll learn

Key ideas in Human Anatomy: Built to Move

  • Limb bones act as levers that pivot around joints acting as fulcrums
  • Muscles attach close to the pivot, requiring large effort forces to lift small weights
  • This mechanical setup allows the hand or foot to move much faster and sweep through a wide arc with small muscle contractions
  • Ball-and-socket joints allow wide, multi-directional motion but risk dislocation
  • Hinge joints lock motion to a single back-and-forth plane, providing strong structural support
  • The shoulder socket is shallow for maximum reach, whereas the hip socket is deep for bearing body weight
  • Bone ends are capped with smooth cartilage that absorbs shock and prevents bone grinding
  • Joint cavities contain slippery synovial fluid that acts as an oil slick between moving parts
  • Direct bone-on-bone contact causes severe wear, grinding, and pain
  • Ligaments anchor bone directly to bone across a joint
  • Ligaments act like tough, non-stretchy straps rather than elastic rubber bands
  • Their job is to physically check movement and stop joints from twisting or hyperextending beyond safe limits
  • Bone is living tissue that constantly absorbs and deposits mineral density
  • High-impact or weight-bearing activities prompt bones to lay down denser structure where the strain occurs
  • Lack of mechanical load, such as prolonged bed rest or spaceflight, causes bone mineral loss
  • Muscles can only pull by contracting; they cannot actively push bones apart
Why not just Google it

You've tried the other tabs

Wikipedia

Thirty open tabs. Four facts you actually kept.

YouTube

You watched. You nodded. By Sunday it was gone.

ChatGPT

One answer, then back to scrolling.

Online courses

Eight weeks. You meant to finish. You didn't.

Tomo gives Human Anatomy: Built to Move the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.

Try a question

Here's what playing it feels like

A real question from this course. Take your best guess.

How Your Limbs Move

Because your arm muscle attaches very close to your elbow joint, what does it have to do?

Get it right to open this lesson and 11 more in the app.

Course map

Where Human Anatomy: Built to Move takes you

  1. 1

    The Mechanical Frame

    • Bones and Joints: Levers You Live In
    • Muscles: The Pull-Only Engine
  2. 2

    The Pressure Systems

    • The Lungs: Suction and Recoil
    • The Cardiovascular Loop: One-Way Circulation

2 sections · 4 units · 12 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
The Professor

Human Anatomy: Built to Move is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.

Start free

Start Human Anatomy: Built to Move today.

Download Tomo, search Human Anatomy: Built to Move, and play your first lesson in under a minute.