Final answer:
The liver is primarily located in the right hypochondriac and epigastric abdominopelvic regions, with small extensions into the left hypochondriac (tip) and right lumbar (tip) regions.
Step-by-step explanation:
The liver is a vital organ involved in many functions of the body, including digestion and metabolism. Regarding its location in the abdominopelvic regions, the liver primarily occupies the right hypochondriac and epigastric regions. The larger right lobe of the liver is located in the right hypochondriac region, while the smaller left lobe extends into the epigastric region, and slightly into the left hypochondriac region (tip).
The liver also reaches into the right lumbar region (tip), but to a much lesser degree than the aforementioned regions. This organ's positioning is directly inferior to the diaphragm in the right upper quadrant of the abdominal cavity, well-protected by the ribcage.
The specific regions occupied by the liver are: a) Right Hypochondriac, b) Epigastric, and, to a lesser extent, c) Left Hypochondriac (tip), and d) Right Lumbar (tip).