Biology / Unit 13 Bio 3087 short lesson, about 20 seconds
Axial Skeleton
Captions available
The idea
The axial skeleton forms a vertebrate's central axis, comprising the skull, vertebral column, and rib cage, and primarily protects the brain, spinal cord, and thoracic organs.
In practice
The rib cage encloses the heart and lungs while the vertebral column encases the spinal cord along its length.
Where people slip
The axial skeleton carries no limbs — those attach through a separate division.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
Unlocks
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