A detailed anatomical illustration showcasing the concentric and eccentric phases of muscle contraction. The foreground depicts a human limb in cross-section, highlighting the underlying muscle fibers and tendons. The muscles are shown contracting concentrically on the left and eccentrically on the right, with clear visual cues to distinguish the two actions. The middle ground features a clean, white background with subtle grid lines to provide spatial context. The background subtly fades into a muted, neutral color scheme, allowing the muscle mechanics to be the focal point. Crisp, high-resolution rendering with realistic shading and textures, illuminated by soft, diffused lighting to convey a sense of depth and three-dimensionality.

A-detailed-anatomical-illustration-showcasing-the-concentric-and-eccentric-phases-of-muscle