Which Protein Below Is Often a Component of Intermediate Filaments

question 40

Multiple Choice

Which protein below is often a component of intermediate filaments?

• A)alpha-tubulin
• B)beta-tubulin
• C)actin
• D)keratin
• E)myosin

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Definitions:

Medullary Cavity

Large, marrow-filled cavity in the diaphysis of a long bone.

Endosteum

A thin vascular membrane lining the inner surface of the bony tissue that forms the medullary cavity of long bones.

Osteoblasts

Bone-forming cells involved in the synthesis and mineralization of bone during both initial bone formation and later bone remodeling.

Sharpey Fibers

Thick collagen fibers that anchor periosteum (the outer fibrous layer of bone) to the bone, playing an important role in the attachment of tendons and ligaments to bones.