CT: Supportive CT: Bone

Question 1

Bone Classification

Answer 1

• Long
• Short
• Flat
• Irregular
• Sesamoid

Question 2

Part of a flat bone on the inner and outer surfaces

Answer 2

Cortex

Question 3

Part of a flat bone in between layers of compact bone (spongy bone)

Answer 3

Diploë

Question 4

Are bones avascular or vascular?

Answer 4

Vascular

Question 5

Nutrient arteries pass into bone via

Answer 5

Nutrient foramina

Question 6

What do the branches of the nutrient arteries supply?

Answer 6

• Bone marrow
• Spongy bone
• Deeper compact bone layers

Question 7

What supplies most compact bone one the surface?

Answer 7

Periosteal arteries

Question 8

What supplies blood to the inner area of the epiphyseal plate of cartilage?

Answer 8

Metaphyseal arteries

Question 9

Outer weight bearing regions of bones

Answer 9

Compact/cortical

Question 10

Histological unit of compact/cortical bone

Answer 10

Haversian system/osteon

Question 11

Contains the blood vessels that are found at the center of the Haversian systems

Answer 11

Haversian canals

Question 12

Concentric rings of calcified matrix found around the Haversian canals

Answer 12

Lamellae

Question 13

Outer lamellae

Answer 13

Circumferential

Question 14

Inner lamellae

Answer 14

Interstitial

Question 15

Runs perpendicular to the long axis of the bone and allows blood vessels from the periosteum to connect with Haversian canals and the medullary cavity

Answer 15

Volkmann’s canals

Question 16

Mature bone cells that are found in lacunae at the edges of the concentric lamellae

Answer 16

Osteocytes

Question 17

Narrow channels that radiate from the lacunae and contain processes of the osteocytes

Answer 17

Canaliculi