Compact and spongy bone structures for chapter 6 quiz

Why is spongy bone less dense than compact bone?

Because of trabeculae

Where is the trabeculae arranged?

Along the stress lines

The structural and functional unit of compact bone

Osteon

Other name for osteon

Haversian system

What binds the osteons together?

Circumferential lamellae

What does the Circumferential lamellae also do?

surrounds the diaphysis of long bone

Perforating canals

sideways canals that carry blood vessels into the bone and marrow

other name for perforating canals?

Volkmann’s canals

What is an osteon composed of:

• Central canal

• Concentric lamellae

• lacunae

• Canaliculi

Other name for a central canal

Haversian canal

Function of central canal

Carries blood vessels in a vertical position (up and down)

what is Concentric lamellae?

layers of bone tissue around central canal

Lacunae

Small spaces where osteocytes reside

Canaliculi

Small passageways through lamellae

Do spongy bones have osteons?

No

What is inside of spongy bone?

An open network of trabeculae

What is the space between trabeculae filled with?

Red bone marrow

Red bone marrow function

It forms blood cells, has blood vessels, and supplies nutrients to osteocytes

What will flat bones be compose of

An inner and out layer of spongy bone

What will be in between the outer and inner layer of spongy bone?

The diploe layer