MSK

Question 1

Name the 6 functions of the skeleton.

Answer 1

Raise off ground; determine body shape; hold body mass; movement; protection; store minerals.

Question 2

Describe the 2 divisions of the skeleton.

Answer 2

Appendicular: long peripheral bones.
Axial: Skull, ribs & vertebrae.

Question 3

Describe the 5 bone shapes.

Answer 3

Long: tubular, hollow, expanded ends.
Short/cuboidal
Flat: curved protective plates
Irregular: 'other', various shapes
Sesamoid: type of irregular, round oval nodules in a tendon eg kneecaps.

Question 4

Describe the 2 types of bone macrostructure.

Answer 4

Cortical: Compact and dense with cells & vessels

Trabecular/cancellous: spongy with marrow, cells & vessels.

Question 5

Describe the 2 types of bone microstructure.

Answer 5

Woven: made fast, disorganised & no structure.
Lamellar: made slowly to replace woven, organised layered structure.

Question 6

Describe the composition of bone.

Answer 6

50-70% mineral calcium phosphate to provide stiffness.
20-40% organic collagen to provide elasticity.
5-10% water.