Sequstrated lobe of lung is commonly supplied by –
**Core Concept**
The concept being tested is the anatomical structure and blood supply of the lung, specifically the segmental bronchi and their corresponding pulmonary arteries.
**Why the Correct Answer is Right**
The segmental bronchi are divided into three main lobes: the superior, middle, and inferior lobes. However, the lung is further subdivided into 10 lobules, each supplied by a segmental bronchus and its corresponding pulmonary artery. The superior segment of the lower lobe is known as the "lingula" or "lingular segment" and is often considered as a separate lobe. It is supplied by a separate segmental bronchus and pulmonary artery, making it a "sequestered" lobe.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the question as it does not specify a particular segment or lobe of the lung.
**Option B:** The superior lobe of the lung is actually supplied by the upper lobe pulmonary artery, not the sequestered lobe.
**Option C:** The middle lobe of the lung is supplied by the middle lobe pulmonary artery, not the sequestered lobe.
**Clinical Pearl / High-Yield Fact**
The lingula or lingular segment is often considered a separate lobe due to its distinct blood supply and drainage. It is a common site for lung abscesses and infections.
**Correct Answer:** C.