When skeletal muscles contract such that bone segments move closer together, this action is known as:

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Flexion refers to the movement of bone segments towards each other, often resulting in a bending of the joint. This is a common action seen in muscles such as the bicep during the lifting of a weight towards the shoulder. Extension, on the other hand, refers to the movement of bone segments away from each other, often resulting in a straightening of the joint. Lengthening contraction is not a recognized term, and tetanus refers to a state of sustained contraction rather than a specific movement.

When Skeletal Muscles Contract Such That Bone Segments Move Closer