Components of bone

Question 1

Regions of long bones
Diaphysis:

Answer 1

shaft

Question 2

Epiphysis

Answer 2

articular end of the bone

Question 3

Epiphyseal plate/disc:

Answer 3

growth region between diaphysis and epiphysis

Question 4

Metaphysis:

Answer 4

transitional area between diaphysis and epiphyseal plate

Question 5

General composition

Answer 5

Organic component (35%): type I collagen fibers, GAGs, glycoproteins
Inorganic component (65%): hydroxyapatite

Question 6

Elements of bone tissue:
Osteon:

Answer 6

series of concentric lamellae with a canal containing blood vessels and nerves in the center
Concentric: form the osteon itself
Interstitial: between osteons
Circumferential: around outside and inside of bone

Question 7

Lacuna

Answer 7

contain a mature osteocyte (formerly osteoblast)