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 2 · The axial skeleton protecting the core
teacher Guard the core, eighty bones! Guard the core, eighty bones, Keeping us safe and standing tall.
Fun Fact
The floating bone: The hyoid bone in your throat is the only bone in your entire body that is completely disconnected from all other bones.
Glossary
axial skeleton (noun)
The bones constituting the head and trunk of a vertebrate body. In humans, this structure consists of eighty bones that shield the brain, spinal cord, and thoracic organs.
The bones constituting the head and trunk of a vertebrate body. In humans, this structure consists of eighty bones that shield the brain, spinal cord, and thoracic organs.
Quiz
What is the name of the flexible tissue that connects the rib bones to the sternum?
Quiz
Which bone of the human skull is the only one that is capable of independent movement?
Quiz
How many bones make up the adult human skull, excluding the tiny bones of the middle ear?
Quiz
What is the name of the rigid, puzzle-like joints that hold the bones of the skull together?
Quiz
What U-shaped bone in the throat is the only human bone that does not touch any other bone?