Histology - Bone Flashcards

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1
Q

What are the four components of Compact bone

A
  1. Lamellae (The rings)
  2. Lacuna (cavaties containing osteocytes)
  3. Central Canal (contains nerves and blood vessels)
  4. Canaliculi (passageway between lacunae)
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2
Q

What is the name of the structure of what is contained in compact bones?

A

An osteon or Haversian system

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3
Q

What is the name of the structures contained in Spongy Bone?

A

Trabeculae - less dense

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4
Q

Within Spongy Bone, name the three cells contained within the trabecular

A
  1. Osteocyte
  2. Osteoclast
  3. Osteoblast
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5
Q

Within Spongy Bone, name the three non-cell “things” within

A
  1. Lamellae
  2. Lacuna
  3. Canaliculi
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6
Q

List the four cells of bone tissue

A

Osteocytes
Osteoblasts
Osteoclasts
Osteoprogenitor cells

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7
Q

What is located in the extra-cellular matrix of compact bone

A

Within the extra cellular matrix of bone is a gel like ground substance with inorganic salts which contains collagen fibres.

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8
Q

What is the function of osteoblasts?

A

Bone producing cells. They function to synthetsize and secrete collagen fibres and other organic components. Initiate calcification.

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9
Q

What is the function of Osteogenic cells?

A

They undergo cell division and develop into osteoblasts.

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10
Q

What is the function of osteocytes?

A

Maintain daily metabolism of bone tissue, including exchange of nutrients and waste with the blood.

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11
Q

What is the function of osteoclasts?

A

Osteoclasts function to remove bone during bone growth.

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