GD FIRST TIMERS CORE 2: Bones 2 (P-R)

This is an accurate computer-generated image of a dust-sized amount of a mouse’s brain. It took a lab at Harvard 5 years to put this image together.

The colored parts of the image above are the blood pipes in the mouse’s brain.

The image below is an actual picture of compact bone taken by an electron microscope.

When bone grows wider like it does when you grow bigger, each hair-like osteon that makes up your bones grow new rings.

Each of the ring layers in the picture above is a lamellae layer.

The big dot in the center of each osteon above is the Boat Canal.

The sand-like spots around each ring are the buried-alive cells.

The larger osteons in the picture above are 200 millimeters across.

The two “canals” (caves) in bone are called the canaliculi and the Haversian Canals.

The Haversian Canals in the bones have to allow the blood to leave the bone once the blood has given up its oxygen.

Compact bone and cortical bone are different kinds of bone.

If the blood piping was plumbed incorrectly in bones, all living things with bones would die.

High-speed soccer players, gymnasts and basketball players are continually damaging their bones. Their bones have to be able to repair themselves.