Human Heart Anatomy Infographic with Labeled Heart Diagram

Biological diagram infographic titled "Human Heart Anatomy". Center the composition around a clean labeled diagram: an editorial-grade cross-section of the human heart, anterior frontal cutaway showing the four chambers, major valves, interventricular septum, and great vessels with biologically accurate proportions for a university undergraduate audience. Use 7 labeled parts arranged evenly around the central heart with thin leader lines pointing precisely to each structure; each label must include a short heading in English and a one-line function description in English. Label 1: "Right Atrium" — "Receives deoxygenated blood from the venae cavae." Label 2: "Right Ventricle" — "Pumps deoxygenated blood to the lungs through the pulmonary trunk." Label 3: "Left Atrium" — "Receives oxygenated blood from the pulmonary veins." Label 4: "Left Ventricle" — "Pumps oxygenated blood into the aorta for systemic circulation." Label 5: "Tricuspid Valve" — "Prevents backflow from the right ventricle into the right atrium." Label 6: "Mitral Valve" — "Prevents backflow from the left ventricle into the left atrium." Label 7: "Aorta" — "Carries oxygenated blood from the heart to the body." Show subtle internal flow logic with understated directional arrows for deoxygenated versus oxygenated blood pathways, but keep the main focus on anatomy rather than a full pathway chart. Visual style: medical illustration (Netter-style), medical-textbook clarity, editorial scientific illustration, vector-clean lines, no photographic textures. Color palette: monochrome scientific, using grayscale, charcoal, soft slate, and muted ink tones with gentle tonal contrast for depth; tasteful educational mood, precise, calm, and clinically clear. All labels sharp and readable, with balanced negative space, clean typography, fine linework, and no decorative clutter. No graphic medical gore, no real patient photos, no surgical blood, no cruelty imagery, scientifically accurate anatomical naming. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no graphic gore, no real patient photos, no watermarks No graphic medical gore, no real patient photographs, no surgical blood. For human anatomy, keep illustrations educationally tasteful. For animal anatomy, no cruelty imagery. Scientifically accurate labeling and proportions.