**Core Concept**
The liver is divided into functional and anatomical segments, which are essential for surgical resection and understanding liver anatomy. The Couinaud classification is a widely used system to describe these segments, based on the hepatic veins and portal veins.
**Why the Correct Answer is Right**
The liver is composed of 8 hepatic segments, as described by Claude Couinaud. These segments are further divided into 4 hepatic lobes (left, right, caudate, and quadrate). The hepatic veins and portal veins serve as boundaries between these segments. The left lobe is further divided into segments II and III, while the right lobe is divided into segments V, VI, VII, and VIII. The caudate lobe is segment I, and the quadrate lobe is segment IV.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not accurately represent the Couinaud classification.
**Option B:** This option is incorrect as it underestimates the number of hepatic segments.
**Option C:** This option is incorrect as it overestimates the number of hepatic segments.
**Clinical Pearl / High-Yield Fact**
In liver surgery, knowledge of the hepatic segments is crucial for precise resection and minimizing complications. The Couinaud classification is widely used to guide surgical decisions.
**Correct Answer:** C. 8
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