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Questions and Answers
What is compact bone?
What is compact bone?
- Has few spaces, forms the external layer of all bones (correct)
- Has many spaces and forms the internal layer of bones
- Makes up the entire structure of long bones
- Contains osteons and is found only in short bones
What does an osteon contain?
What does an osteon contain?
A central canal where blood vessels, lymphatic vessels, and nerves are found.
Which statement about spongy bone is true?
Which statement about spongy bone is true?
- Is only found in long bones
- Contains osteons
- Does not contain osteons and consists of trabeculae (correct)
- Is denser than compact bone
In which types of bones does spongy bone predominate?
In which types of bones does spongy bone predominate?
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Study Notes
Compact Bone
- Characterized by having minimal spaces; creates a dense structure.
- Forms the outer layer of all bones, providing strength and support.
- Predominantly makes up the diaphysis (shaft) of long bones.
- Composed of functional units called osteons, which are cylindrical structures.
Osteon
- Structural unit of compact bone, also known as Haversian system.
- Each osteon contains a central canal housing blood vessels, lymphatic vessels, and nerves.
- Osteons are oriented parallel to the long axis of the bone, facilitating strength.
Spongy Bone
- Lacks osteons, unlike compact bone, contributing to its lighter weight.
- Composed of trabeculae, which are small, rod-like structures with irregular lamellae.
- Houses osteocytes within tiny cavities known as lacunae.
- Predominantly found in short, flat, and irregular bones; majorly concentrated in the epiphyses (ends) of long bones.
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Description
This quiz explores the key differences between compact and spongy bones. You will learn about their structures, functions, and components. Perfect for students studying anatomy or related fields!
