In which region and quadrant can the following organs be found?
a. Stomach - left upper quadrant; epigastric region
b. Ascending colon - right upper quadrant; right lumbar region
c. Descending colon - left upper quadrant; left lumbar region
d. Urinary bladder - left lower quadrant; hypogastric region
e. Liver - right upper quadrant; right hypochondriac region
f. Appendix - right lower quadrant, right iliac region