Aiyana Marie’s Reviews > 30-Second Anatomy: The 50 Most Important Structures And System In The Body, Each Explained In Half A Minute > Status Update

The brain is about one fiftieth of an adult's body weight. Yet the brain uses one-fifth of the lungs' oxygen supply.

- p. 128

The bones of the adult skull are fused together by a movable fiber joints known as sutures. However, the bones of a baby's skull are not fused. This lets the bones overlap during delivery of the baby's head through the birth canal and permits postnatal growth.

- p. 22

The bones are constantly changing and renewing themselves-adukt humans completely replace their skeleton every ten years or so

-p. 16