A flat bone has been sectioned. At this magnification, you can see the outer layers of compact bone tissue (A) as well as the inner layer of spongy bone tissue (you can see the trabeculae of spongy bone tissue in B).

What other tissue is found inside this bone, in between the trabeculae (C)?
Write your answer in the box below.

To have a better look at these two bone tissues, click inside the green squares.

Click on the compact bone tissue - then click on the button "label it" to reveal the labels.
Can you identify what is labelled on this photomicrograph?
Write your answers in the boxes below.

Go back on the first picture and click on the spongy bone tissue. Label the following:



Click on the right square: what is a?

By the way can you see the endosteum lining the surface of the spongy bone?