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Differences Between Compact and Spongy Bones

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Differences Between Compact and Spongy Bones

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Questions and Answers

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?

A central canal where blood vessels, lymphatic vessels, and nerves are found.

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?

<p>Short, flat, and irregular shaped bones; most of the epiphyses of long bones.</p> Signup and view all the answers

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!