How do I label a heart diagram?

In your prompt, list the structures you want labeled: for example "label the right atrium, right ventricle, left atrium, left ventricle, tricuspid valve, mitral valve, aorta, and vena cava with leader lines." Figviz draws the diagram and places each label with a connecting line. You can also request numbered blanks for a student-labeling worksheet instead of text labels.

Is the heart diagram generator free?

Yes. Every account starts with free credits you can use right away, no credit card needed. Buying any pay-as-you-go credit pack removes the watermark and unlocks higher output resolutions. Credits never expire, so you can use them at your own pace.

Can I get a blank or unlabeled heart diagram for a worksheet?

Yes. Ask Figviz for "an unlabeled heart diagram with numbered leader lines for a student worksheet" and it will generate a clean outline with numbered pointers and no text labels, ready to print. You can choose how many structures to include and whether to add a numbered answer list at the bottom.

Can I use it for homework, class, or medical study?

Yes. Download a high-resolution PNG (up to 4K) for slides, printed worksheets, study guides, and presentations. The AI diagram is excellent for learning and teaching; always cross-check anatomical labels against your course textbook for academic submissions. Diagrams from a paid account can be used in your own teaching materials.

Can the generator show blood flow through the heart?

Yes. Ask for red and blue arrows to trace the cardiac circuit, blue for deoxygenated blood traveling from the vena cava through the right side to the pulmonary artery, and red for oxygenated blood returning from the lungs through the left side and out the aorta. You can also request a step-by-step flow path labeled at each stage.

AI-Powered

Heart Diagram Generator Heart Diagrams

Describe the heart anatomy you need and Figviz generates a clean, labeled diagram in seconds, chambers, valves, major blood vessels, and blood flow arrows all included. Perfect for students, teachers, and healthcare learners.

✓Chambers, valves & vessels labeled✓Blood flow direction arrows✓Blank worksheet versions✓Slide & print ready at 4KLast updated: 2026-06-21

Heart Diagram Examples

Browse heart diagrams made with Figviz, or generate your own above

Labeled Human Heart Anatomy

A complete anterior-view heart diagram with all four chambers, the tricuspid, mitral, pulmonary, and aortic valves, and the major vessels labeled.

anatomylabeledchambers

Blood Flow Through the Heart

Color-coded blood flow diagram using red arrows for oxygenated blood (left side) and blue arrows for deoxygenated blood (right side), tracing the complete cardiac circuit.

blood flowcirculationoxygenated

Heart with Major Blood Vessels

A diagram focused on the six major vessels connecting the heart to the body and lungs, aorta, superior vena cava, inferior vena cava, pulmonary trunk, and pulmonary veins.

vesselsaortavena cava

Four Chambers Cross-Section

A coronal cross-section revealing the interior of all four chambers, the interventricular septum, papillary muscles, chordae tendineae, and valve positions.

cross-sectionchambersseptum

Blank Heart Diagram for Worksheets

A clean, unlabeled heart diagram with numbered leader lines pointing to 12 key structures, ready to print as a student worksheet or quiz.

blankworksheetunlabeled

Cardiac Conduction System

An illustrated diagram of the cardiac conduction system, sinoatrial node, atrioventricular node, bundle of His, bundle branches, and Purkinje fibers, with the electrical impulse pathway highlighted.

conductionSA nodeAV node

Prompt templates you can copy

Start with one of these examples, then adapt the subject, labels, data, or layout for your own use.

Labeled Human Heart Anatomy

A complete anterior-view heart diagram with all four chambers, the tricuspid, mitral, pulmonary, and aortic valves, and the major vessels labeled.

Create a clear, fully labeled human heart anatomy diagram in anterior view. Label all four chambers (right atrium, right ventricle, left atrium, left ventricle), all four valves (tricuspid, mitral, pulmonary, aortic), the aorta, superior and inferior vena cava, pulmonary arteries and veins. Use leader lines with clean text. Classic textbook medical illustration style. White background.

Blood Flow Through the Heart

Color-coded blood flow diagram using red arrows for oxygenated blood (left side) and blue arrows for deoxygenated blood (right side), tracing the complete cardiac circuit.

Create a colorful heart diagram showing blood flow through the heart. Use bold blue arrows to show deoxygenated blood entering the right atrium from the vena cava, passing through the right ventricle to the pulmonary artery. Use bold red arrows to show oxygenated blood returning via pulmonary veins to the left atrium, then left ventricle and out the aorta. Label each chamber, vessel, and valve. White background.

Heart with Major Blood Vessels

A diagram focused on the six major vessels connecting the heart to the body and lungs, aorta, superior vena cava, inferior vena cava, pulmonary trunk, and pulmonary veins.

Create a labeled medical illustration of the human heart emphasizing its major blood vessels. Clearly label the ascending aorta, aortic arch, superior vena cava, inferior vena cava, pulmonary trunk, left and right pulmonary arteries, and pulmonary veins. Show the vessels in proportion with the heart, use color to distinguish arterial (red) from venous (blue) vessels, include leader lines and clean labels. Classic textbook style. White background.

Four Chambers Cross-Section

A coronal cross-section revealing the interior of all four chambers, the interventricular septum, papillary muscles, chordae tendineae, and valve positions.

Create a labeled coronal cross-section diagram of the human heart showing the interior of all four chambers. Label the right atrium, right ventricle, left atrium, left ventricle, interatrial septum, interventricular septum, papillary muscles, chordae tendineae, and the positions of the tricuspid and mitral valves. Show myocardial wall thickness differences between left and right ventricles. Colorful educational style. White background.

What is a heart diagram?

A heart diagram is a labeled illustration of the human heart that shows its internal and external anatomy, the four chambers, four valves, major blood vessels, and the pathways blood takes through the cardiac circuit. Heart diagrams range from simple outlines used in school worksheets to detailed cross-sections used in medical education. They are one of the most commonly studied anatomy illustrations because the structure of the heart maps directly onto how it functions: understanding where each chamber, valve, and vessel sits explains exactly how blood is pumped to the lungs and body. Figviz lets you generate any variant of a heart diagram from a plain description, with labels, blood flow arrows, and style options to match your specific need.

How to make a heart diagram

Decide which structures to show, all four chambers and valves, blood flow direction, major vessels, or a blank version for student labeling.

Describe what you need in the prompt box: mention the view (anterior or cross-section), which labels to include, and whether to show blood flow arrows.

Choose a style: Classic for a textbook look, Colorful for red/blue oxygenation coding, or Minimal for a clean printable outline.

Select your aspect ratio and quality (up to 4K), then click Generate Heart Diagram.

Review the result, refine the prompt if a label or structure needs adjustment, and download your PNG.

Parts of the heart you can label

Right atrium, receives deoxygenated blood from the body via the vena cava.

Right ventricle, pumps deoxygenated blood into the pulmonary artery toward the lungs.

Left atrium, receives oxygenated blood returning from the lungs via the pulmonary veins.

Left ventricle, pumps oxygenated blood into the aorta and out to the body; its wall is the thickest.

Tricuspid valve, guards the opening between the right atrium and right ventricle.

Pulmonary (semilunar) valve, sits at the base of the pulmonary artery.

Mitral (bicuspid) valve, guards the opening between the left atrium and left ventricle.

Aortic (semilunar) valve, sits at the base of the aorta.

Aorta, the largest artery in the body, carrying oxygenated blood from the left ventricle.

Superior and inferior vena cava, return deoxygenated blood from the upper and lower body.

Pulmonary trunk, arteries, and veins, the vessels connecting the heart to the lungs.

Cardiac conduction system, SA node, AV node, bundle of His, and Purkinje fibers.

Tips for an accurate heart diagram

State the view you need (anterior external, coronal cross-section, or posterior) because the visible structures change significantly with the angle. For blood flow diagrams, specifying "blue arrows for deoxygenated, red arrows for oxygenated" gives the clearest output. If you want a worksheet version, ask for numbered leader lines instead of text labels and Figviz will leave the label text blank. For the cardiac conduction system, mention each node by name (SA node, AV node, bundle of His, Purkinje fibers) so none are omitted. If any label looks misplaced, describe its correct position in a follow-up prompt and regenerate, precision language produces precision diagrams.

Frequently asked questions

A heart diagram generator is a tool that creates labeled anatomical illustrations of the human heart from a text description. With Figviz you describe which structures to show, chambers, valves, vessels, blood flow, or conduction system, and the AI produces a clean, print-ready diagram in seconds, without any drawing software required.

Related medical & anatomy tools

All tools →

Make your own heart diagram with Figviz

Create a free account and get starter credits to generate your own. No credit card required.