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Start hereFreeHow a growth plate worksWhere a bone gets longer, the three stages a cartilage cell passes through on its way to becoming bone, what sets the pace, and why it stops.Start reading

Hormones

What the rest of the body tells the growth plate.

Timing

What starts puberty, and what closes the plates.

Inside the plate

Signals the plate’s own cells pass to each other.

Inside the cell

What a cartilage cell does once a signal arrives.

Matrix and bone

What the plate is built from, and how it becomes bone.

Measured height

What is inherited, what posture hides, and what shoes add.

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