Final answer:
The liver segments 4a/b and 2/3 correspond to the Quadrate and Caudate Lobes, respectively, within the liver's right lobe.
Step-by-step explanation:
The liver segments denoted as "Liver segments 4a/b and 2/3" refer to the Quadrate Lobe and the Caudate Lobe, respectively. These segments are part of the liver's right lobe. The Quadrate Lobe is located inferiorly and is defined by internal features, and the Caudate Lobe is positioned posteriorly.