QuestionSBA
QuestionChoice
Calcium hydroxyapatite constitutes the majority of the bone matrix. The matrix is 65% inorganic. Of this, 95% is made up of calcium hydroxyapatite.
10007141
a
Calcium hydroxyapatite
QuestionChoice
Collagen makes up 28% of the 35% organic composition of the bone matrix. It is mainly type 1 collagen, necessary for tensile strength.
10007142
b
Collagen
QuestionChoice
Vitamin D is important for bone health as it helps the body absorb calcium, but it is not the main component of the bone matrix.
10007144
d
Vitamin D
QuestionChoice
Water makes up 5% of the matrix of the bone.
10007145
e
Water
QuestionChoice
Phosphorus is a mineral that is important for bone health, but it is not the main component of the bone matrix.
10007143
c
Phosphorous
Concept
Chapter
2693
4573
Bone composition
Topic
154
Musculoskeletal physiology and disease
13975
A 75-year-old man attends A&E with a distal radius fracture. He is keen to reduce his risk of sustaining further fractures, and asks about the composition of bone.

Which of the following is the main component of the bone matrix?
a