ScienceThe ProfessorIntermediate
Functional Human Anatomy, a free science course on Tomo

Functional Human Anatomy

Bridge the gap between anatomical names and how the living body actually moves. Discover how bones, joints, muscles, and neural circuits collaborate to generate force and control motion.

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

21 levels across 3 sections, about 42 minutes end to end, roughly 8 days at five minutes a day. It moves through Joint Mechanics and Muscle Force, The Neural Wiring: PNS and Reflexes, and Central Command and Structural Adaptation. It assumes you already know the basics.

21 bite-size levelsAbout 5 minutes each

Free forever · No credit card · iPhone & Android

Marrow the Marmot, the guide who teaches the Functional Human Anatomy course
Functional Human Anatomy
with Marrow the Marmot
21
Levels
3
Sections
5
Min/day
What you'll learn

Key ideas in Functional Human Anatomy

  • Hinge joints restrict articulation to uniaxial flexion-extension
  • Saddle joints permit biaxial movement but forbid axial rotation
  • Spherical ball-and-socket articulations allow triaxial movement
  • Ligaments mechanically check passive translation at end-range
  • Tendons channel muscular contraction forces to displace bone
  • Ligamentous collagen resists tension without contracting actively
  • Third-class levers place the effort between the fulcrum and load
  • Effort arm is shorter than load arm, creating mechanical disadvantage
  • Small muscle contractions produce large, rapid distal limb excursions
  • Loose-packed positions maximize joint space and minimize intracapsular pressure
  • Close-packed positions lock articular surfaces in maximal congruent contact
  • Loose-packed alignment yields lax capsule and ligaments to permit joint play
  • Adult hyaline cartilage is avascular and relies entirely on diffusion
  • Cyclic compression drives fluid flow for chondrocyte nutrition
  • Articular cartilage flattens to disperse focal stresses to subchondral bone
  • Pennation angles allow more muscle fibers to pack into a shared cross-sectional area
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 Functional Human Anatomy 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.

Degrees of Freedom and Joint Restraints

Your thumb's base is a saddle joint. Which movement pattern does this interlocking shape permit?

Get it right to open this lesson and 20 more in the app.

Course map

Where Functional Human Anatomy takes you

  1. 1

    Joint Mechanics and Muscle Force

    • Mapping Joint Articulations and Movement
    • Muscle Architecture and Contraction Dynamics
  2. 2

    The Neural Wiring: PNS and Reflexes

    • Peripheral Nerve Paths and Plexuses
    • Proprioceptive Sensors and Reflex Circuits
  3. 3

    Central Command and Structural Adaptation

    • CNS Motor Pathways and Brainstem Control
    • Bone Architecture and Adaptive Remodeling
    • Pathomechanics of Entrapment and Joint Wear

3 sections · 7 units · 21 levels. Built to play, not to enroll.

How it's taught

You pick the voice

This course
The Professor

Functional Human Anatomy 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.

Keep going

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Start free

Start Functional Human Anatomy today.

Download Tomo, search Functional Human Anatomy, and play your first lesson in under a minute.