The attachment site of a muscle's tendon to the more-movable bone is called the __________.

• A. belly
• B. proximal end
• C. insertion
• D. origin
• E. distal end

Answer: (C)

Verified step by step guidance

1. Understand the basic anatomy of a muscle: Muscles are attached to bones by tendons, and they have two main points of attachment - the origin and the insertion.
2. Define the term 'origin': The origin is the attachment site of a muscle's tendon to the less-movable bone, typically located closer to the center of the body.
3. Define the term 'insertion': The insertion is the attachment site of a muscle's tendon to the more-movable bone, usually located further from the center of the body.
4. Differentiate between 'origin' and 'insertion': While the origin remains relatively stationary during muscle contraction, the insertion moves as the muscle contracts.
5. Apply the definitions to the problem: Since the problem asks for the attachment site to the more-movable bone, the correct term is 'insertion'.