Anatomy of a Long Bone

Question 1

Diaphysis

Answer 1

Long, cylindrical portion (shaft) of bone

Question 2

Epiphysis

Answer 2

Proximal and distal ends of a bone. Includes articular surfaces.

Question 3

Metaphysis

Answer 3

Junction between epiphysis and diaphysis. Includes the growth plate.

Question 4

Articular Cartilage

Answer 4

Hyalin cartilage covers articular surfaces (between bones) to lessen friction

Question 5

Periosteum

Answer 5

Outer membrane of bone. Surrounds bone where there is no cartilage. Periosteum contains bone cells, allowing bone to grow in width. Protects, nourishes, repairs, attachment site.

Question 6

Medullary Canal or Cavity

Answer 6

Space within diaphysis where bone marrow is located.

Question 7

Endosteum

Answer 7

Thin membrane that lines the medullary canal. Composed of a single layer of bone forming cells and a small amount of connective tissue.