Annelid Worm Anatomy Diagram - Segmented Body and Circulatory System #3505648 (License: Personal Use)

This vector illustration depicts a simplified annelid worm, such as an earthworm, with clearly defined body segments (metameres) outlined in brown. One segment is transparently rendered to expose a pink, muscular organ resembling a dorsal vessel or aortic arch, indicating part of its closed circulatory system. The design uses soft shading and clean lines for clarity in educational contexts.

Used in biology textbooks, educational websites, or classroom slides to teach invertebrate anatomy, specifically annelid segmentation and circulation. Matches user intent for visual learning resources on earthworm physiology.