organic tubular 3d model

A long, hollow cylindrical organic tube, open on both ends, uniform diameter throughout, thin walls approximately 2-3mm thick. The interior surface is covered in soft parallel longitudinal ridges and subtle horizontal folds running the full length of the tunnel. Deep rose-pink coloration, moist and slightly glossy surface. The tube is elongated — length at least 4x the diameter. Smooth muscular exterior with faint surface vascularity. Cross-section view showing the hollow interior clearly open on both sides. First-person traversable tunnel scale. Hyper-realistic anatomical organic tube, medical illustration style, studio lighting, transparent background.