The human skeletal system
Chapter 1
The living architecture of bone
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Chapter 2
The axial skeleton protecting the core
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Chapter 3
The appendicular skeleton designed for movement
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Chapter 4
The lifetime journey of bones
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Chapter 5
What bones leave behind
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YOUR GOAL
Master of The human skeletal system
Ch 1 · The living architecture of bone
teacher We rebuild every bone from deep inside (Yeah, we do!) / A brand new frame where we reside (Oh-oh, brand new!)
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.
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.
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.
Quiz
What is the name of the microscopic, tube-like structural units that make compact bone strong?
Quiz
What is the primary organic component of bone that provides flexibility and prevents brittleness?
Quiz
What percentage of an adult human's skeletal mass is completely remodeled and replaced each year?
Quiz
Which mineral works alongside calcium in bones and is stored at 85% of the body's total capacity?
Quiz
Which type of bone cell is responsible for dissolving bone tissue to release minerals?
Quiz
Where in the human skeletal system are about 200 billion new red blood cells produced daily?
Quiz
What percentage of the body's total calcium reserves is stored within the human skeleton?