Which fissure separates the right upper lobe from the middle lobe?

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Multiple Choice

Which fissure separates the right upper lobe from the middle lobe?

Explanation:
In lung anatomy, the lobes are divided by fissures. On the right lung, the horizontal (transverse) fissure runs across to separate the upper lobe from the middle lobe. So the fissure that separates the right upper lobe from the middle lobe is the horizontal fissure. The oblique fissure, located more posteriorly and inferiorly, separates the middle from the lower lobe. The coronary fissure is a groove of the heart, not a lung fissure, and “lateral fissure” isn’t used to describe lung separations.

In lung anatomy, the lobes are divided by fissures. On the right lung, the horizontal (transverse) fissure runs across to separate the upper lobe from the middle lobe. So the fissure that separates the right upper lobe from the middle lobe is the horizontal fissure. The oblique fissure, located more posteriorly and inferiorly, separates the middle from the lower lobe. The coronary fissure is a groove of the heart, not a lung fissure, and “lateral fissure” isn’t used to describe lung separations.

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