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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 6

The Human Skeleton: Axial Skeleton

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Axial Skeleton:

Part of the Axial Skeleton Description Number of Bones Function
Skull Made up of the bones of the head and face. The bones are flat and strong. Only the lower jaw can move. 22 bones total: 8 in the head, 14 in the face Protects the brain, eyes, and ears.
Rib Cage Cage-like structure in the chest, made of one sternum and 12 pairs of ribs. Connected to the spine at the back. 25 bones total: 1 sternum, 12 pairs of ribs Protects the heart and lungs.

Spine (Backbone/Vertebral Column)

Made up of vertebrae stacked one above the other, making the spine flexible. The vertebrae protect the spinal cord, which is connected to the brain. 33 bones (vertebrae) Protects the spinal cord, which sends signals from the brain to the rest of the body.

Skull, rib cage and spinal column

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