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Thebesian Veins All Chambers — FRCA Primary MCQ

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HardAnatomyThebesian Veins All ChambersFRCA Primary

The thebesian veins drain directly into which cardiac chambers?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: D — All four cardiac chambers (predominantly the right atrium and right ventricle)

Thebesian veins (venae cordis minimae) are small veins that drain directly into all four cardiac chambers though predominantly the right atrium and right ventricle. Those draining into the left side contribute to the normal physiological shunt (~2-5% of cardiac output) that accounts for part of the normal A-a gradient.

Reference: RCoA 2021 Primary FRCA Curriculum