Course 01 Skeletal system 206 structures

Anatomy that answers back.

Tap any structure to learn its name, function, and clinical relevance. Then test yourself with timed labeling quizzes โ€” built around how students actually study.

๐Ÿ‘‹ New here? No signup needed โ€” your scores save locally and sync when you create an account.

  1. 1๐ŸŽฏ Take the quiz

    See what you know

  2. 2๐Ÿ‘† Tap to learn

    Fill the gaps in Study

  3. 3โšก Drill timed

    Lock it in with Practice

8
regions
200+
bones
5
study modes

Pop quiz time!

I'll show you a bone โ€” you name it. Easy 60 seconds.

โ€” Ossie ยท tap me for more

Tap a dot โ€” try it!Live demo
Plate I ยท SkeletonOsseo

Color-coded regions ยท the visual index

Skull
22 structures
Spine
33 structures
Thorax
25 structures
Arm
30 structures
Hand
27 structures
Pelvis
4 structures
Leg
30 structures
Foot
26 structures

Chapter I ยท Bone trivia

Did you know? ๐Ÿฆด

๐Ÿ’ช

Femur

Longest & strongest bone โ€” can support 30ร— body weight.

๐Ÿ‘‚

Stapes

Smallest bone in the body โ€” only ~3 mm long.

๐Ÿผ

Babies

Born with ~270 bones; adults have 206 (they fuse!).

๐Ÿฉธ

Marrow

Makes ~2 million red blood cells every single second.

Chapter II ยท The method

Built for how students study

Static diagrams are passive. Osseo turns every structure into something you interact with โ€” color-coded, quizzable, and reviewed.

Tap-to-learn

Click any bone for name, function, and high-yield clinical pearls.

Timed quiz mode

Active-recall labeling drills โ€” the proven way to memorize fast.

Replaceable diagrams

Drop in professionally reviewed illustrations as your atlas grows.

Progress tracking

Sync mastered structures and quiz scores across every device.

Clinical relevance

Each entry includes the high-yield exam-style notes you actually need.

Mistake review

Missed a bone? It loops back into tomorrow's quiz automatically.

Chapter III ยท Anatomy 101

Bones aren't just bones โœจ

Five jobs your skeleton handles every second of every day.

๐Ÿ›ก๏ธ

Protect

Skull guards the brain; ribs shield heart & lungs.

๐Ÿ—๏ธ

Support

The vertebral column holds you upright.

๐Ÿคธ

Move

Bones act as levers for every muscle pull.

๐Ÿงฌ

Produce

Marrow makes red & white blood cells.

๐Ÿ”‹

Store

99% of your body's calcium lives in bone.

Ready to make anatomy stick?

Start with a 60-second quiz. No signup. Your progress saves locally.

Free forever for the basics. Osseo Pro is $4.99/month (or $39.99/year) and unlocks all 206 bones โ€” first 7 days free.