1. Introduction In medical education, “shelf exams” (subject-based standardized examinations, typically from the NBME in the US) assess knowledge in core clinical rotations (e.g., Internal Medicine, Surgery, Pediatrics, Psychiatry, OB/GYN, Family Medicine). “Shelf notes” refer to condensed, high-yield study guides created by students, residents, or commercial publishers to prepare for these exams. Their anatomy —how they are organized and what they contain—is critical for efficient learning. 2. Core Components (The “Anatomy” of Shelf Notes) Well-constructed shelf notes share a predictable structural anatomy, designed for rapid review and retention.