Question

In: Anatomy and Physiology

Consider the osteon and the arrangement of the concentric circles. Discuss the direction of the osteon...

Consider the osteon and the arrangement of the concentric circles.

Discuss the direction of the osteon in compact, cortical bone, and in spongy bone.
What are some similarities and differences and why?

Expert Solution

The osteon is the fundamental functional unit of much compact bone. Osteons are rough cylindrical structures.

Each osteon consists of concentric layers of compact bone tissue that surround a central canal (haversian canal). The haversian canal contains the bone's blood supplies. Each haversian canal is surrounded by 5-20 of concentrically arranged lamellae of bone matrix. Osteons are connected to each other and the periosteum by oblique channels called Volkmann's canals or perforating canals.

Osteon

Similarities

Differences

Compact bone

1. Age

2. Disease resistance.

3. Blood supply

1. Made up of osteons.

2. Also called as cortical bones.

3. Dont have spaces between lamellae.

4. Have bone marrow cavity.

5. Have high amount of calcium.

6. Cylindrical in shape.

7. Harder.

8. Found in inner surface of bones

Spongy bone

1. Age

2. Disease Resistance.

3. Blood supply.

1. Made up of trabeculae.

2. Also called as cancellous bones.

3. Consists spaces between lamellae.

4. Does not have bone marrow cavity.

5. Low amount of calcium.

6. Cuboidal in shape.

7. Softer.

8. Found in outer surfecs of bones.

Sydney Mullin answered 2 years ago

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