Which bone superpower would you choose?
Chapter 1

The living architecture of bone

Chapter 2

The axial skeleton protecting the core

Chapter 3

The appendicular skeleton designed for movement

Chapter 4

The lifetime journey of bones

Chapter 5

What bones leave behind

YOUR GOAL

Master of The human skeletal system

Ch 1 · The living architecture of bone
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artiteacher Inside the spongy bone

Jul 11

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artiteacher The living architecture of bone

We rebuild every bone from deep inside (Yeah, we do!) / A brand new frame where we reside (Oh-oh, brand new!)

Jul 10

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artiteacher The secret strength of osteons

Jul 11

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Inside the spongy bone

artiteacher The porous interior of your bones cushions impacts and serves as a factory for vital blood cells.

Jul 10

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The secret strength of osteons

artiteacher Microscopic building blocks called osteons give compact bone its incredible strength and lightweight structure.

Jul 10

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Busy Bones
BETA

artiteacher Drag each bone to its correct spot to discover how your skeleton holds you up.

Jul 7

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Fun Fact

Bone strength: Ounce for ounce, human bone is stronger than steel, with a bar of bone able to support four times its weight.

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Jul 10

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Glossary
osteon (noun)
A cylindrical structural unit of compact bone consisting of concentric lamellae surrounding a central canal. English physician Clopton Havers first described these microscopic skeletal structures in his 1691 treatise.

Jul 10

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Gossip

Which bone superpower would you choose?

Jul 10

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Quiz

What is the name of the microscopic, tube-like structural units that make compact bone strong?

Jul 10

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artiteacher Not just dry sticks bones are alive

Jul 11

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Quiz

What is the primary organic component of bone that provides flexibility and prevents brittleness?

Jul 10

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artiteacher The mineral bank of the body

Jul 11

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Quiz

What percentage of an adult human's skeletal mass is completely remodeled and replaced each year?

Jul 10

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Quiz

Which mineral works alongside calcium in bones and is stored at 85% of the body's total capacity?

Jul 10

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Quiz

Which type of bone cell is responsible for dissolving bone tissue to release minerals?

Jul 10

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Quiz

Where in the human skeletal system are about 200 billion new red blood cells produced daily?

Jul 10

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Quiz

What percentage of the body's total calcium reserves is stored within the human skeleton?

Jul 10

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Quiz

What thin, fibrous membrane covers the outer surface of all bones, providing nutrients via blood vessels?

Jul 10