Multiple Choice
Bone is broken down by __________.
6. Bones & Skeletal Tissue
Gross Anatomy of Bone: Compact and Spongy Bone
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Spongy bone contains all of the following EXCEPT __________.
A
collagen fibers
B
osteons
C
trabeculae
D
hydroxyapatite
Verified step by step guidance1
Understand the structure of spongy bone: Spongy bone, also known as cancellous bone, is characterized by a porous, honeycomb-like structure. It is typically found at the ends of long bones and in the interior of vertebrae.
Identify the components of spongy bone: Spongy bone contains trabeculae, which are the small, needle-like or flat pieces of bone that form the network. It also contains collagen fibers, which provide flexibility and strength, and hydroxyapatite, a mineral that gives bone its hardness.
Recognize what osteons are: Osteons, also known as Haversian systems, are cylindrical structures found in compact bone, not spongy bone. They consist of concentric layers of calcified matrix and are responsible for the dense, solid nature of compact bone.
Compare the components: Since osteons are a feature of compact bone and not spongy bone, they are the exception in the list of components associated with spongy bone.
Conclude the analysis: Based on the understanding of bone structure, osteons are not found in spongy bone, making them the correct answer to the question.
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