The muscle that separates the thoracic and abdominal cavities.
Abdominal cavity
The cavity containing the digestive organs.
Pelvic cavity
The cavity containing the urinary bladder, reproductive organs, and rectum.
Abdominal Quadrants
RUQ: Right Upper Quadrant, LUQ: Left Upper Quadrant, RLQ: Right Lower Quadrant, LLQ: Left Lower Quadrant. Right and left are from the person's perspective.
Nine Abdominopelvic Regions - Top row
Right hypochondriac, Epigastric, Left hypochondriac.