Musculoskeletal Structure and Physiology

Question 1

What are the three components of extracellular matrix?

Answer 1

1. Collagen
2. Elastin
3. Proteoglycans

Question 2

Function of elastin

Answer 2

Allows reversible deformation (joint capsules, nuchal ligament)

Question 3

Three major cells in bone

Answer 3

Osteoblasts (osteogenic)
Osteocytes (bone cells)
Osteoclasts (breakdown)

Question 4

Three types of cartilage

Answer 4

1. Hyaline (synovial joints)
2. Fibrocartilage (menisci, discs)
3. Elastic cartilage (larynx, epiglottis)