Which anatomical regions are located inferior to the hypochondriac regions on the anterior trunk?

• A. Lumbar regions
• B. Iliac (inguinal) regions
• C. Epigastric region
• D. Umbilical region

Answer: (A)

Verified step by step guidance

1. Understand the anatomical terminology: 'inferior' refers to a position below or lower in relation to another structure, and 'hypochondriac regions' are located on the upper sides of the anterior trunk, just below the rib cage.
2. Recall the division of the anterior trunk into nine regions: These include the right and left hypochondriac regions, epigastric region, right and left lumbar regions, umbilical region, right and left iliac (inguinal) regions, and hypogastric region.
3. Identify the regions directly inferior to the hypochondriac regions: The lumbar regions are located immediately below the hypochondriac regions on both sides of the anterior trunk.
4. Consider other regions that are inferior to the hypochondriac regions: The iliac (inguinal) regions are located further down, below the lumbar regions, and the umbilical region is centrally located below the epigastric region.
5. Review the spatial relationships: The epigastric region is centrally located between the hypochondriac regions, and the umbilical region is inferior to the epigastric region. These regions are all part of the anterior trunk and are relevant to the question.