Bone Formation Flashcards

1
Q

What are the two types of bone?

A

Compact/ cortical = outside of bone
Cancellous/ spongy/trabecular = inside of bone

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2
Q

What makes up the bone matrix?

A

Type 1 collagen and hydroxyapatite

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3
Q

How can collagen be laid down in bone matrix?

A

Woven bone = immature and random. For rapid growth and fracture repair. Weak bone.

Lamellar bone = strong bone. Organised fibres.

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4
Q

What provides the strength in bone?

A

Calcium in collagen

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5
Q

How long does it take to renew bone after remodelling?

A

3 months

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6
Q

Name the four terms to describe bone structure?

A

Diaphysis - shaft of bone
Epiphyses - ends of bone
Metaphysics - spongy bone occupies medullary cavity
Periosteum - outer surface of bone

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7
Q

Difference between osteocyte and osteoclast?

A

Osteocyte - form from osteoblasts after embodied in bony matrix
Osteoclast - break down bone

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