Bone Structure

Question 1

Diaphysis

Answer 1

= Each long bone’s main, central shaft

Question 2

Periosteum

Answer 2

= Membrane covering the diaphysis (in 2 layers)

Question 3

What are the 2 layers of periosteum?

Answer 3

• Outer fibrous layer: made of dense, irregular connective tissue that contains blood vessels, lymph vessels and nerves that pass into the bone.
• Inner osteogenic layer: made of elastic fibers and containing blood vessels and bone cells.

Question 4

Epiphysis

Answer 4

= Each end of the diaphysis (where red blood cells are made)

Question 5

Metaphysis

Answer 5

= The region where the diaphysis joins the epiphysis

Question 6

Epiphyseal plate

Answer 6

= The metaphysis has a layer of hyaline cartilage that allows the diaphysis to grow in length
(In a growing bone)

Question 7

Epiphyseal line

Answer 7

= Replaces the epiphyseal plate in a mature bone that’s no longer growing in length

Question 8

Endosteum

Answer 8

= Membrane lining the medullary cavity (which is inside the diaphysis)