Whole skeleton
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This file groups multiple branches or structures into one object. They highlight and separate together.
Study reference ↗
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This file groups multiple branches or structures into one object. They highlight and separate together.
Study reference ↗Hover over a diagram label for a quick explanation. Click or tap to keep its details open. You can also choose a structure below.

Right and left refer to the person shown. Red and blue indicate relative oxygenation in this diagram; pulmonary arteries carry oxygen-poor blood and pulmonary veins carry oxygen-rich blood.
Systemic venous blood returns through the superior and inferior venae cavae.
Chambers and valves are explained in the sequence; only the supplied diagram’s labeled structures have hotspots. Heart anatomy reference ↗
520 questions across anatomy topics. Choose a topic, answer at your own pace, and learn from every explanation.
Foundational anatomy · No time limit · Explanations after every answer