Final answer:
Both the gallbladder and part of the transverse colon are located in the upper right quadrant of the abdominal cavity.
Step-by-step explanation:
The gallbladder and a portion of the transverse colon lie in the upper right quadrant of the abdominal cavity. The gallbladder is found tucked under the liver, which is located under the diaphragm in the upper right area. Meanwhile, the transverse colon begins at the right colic flexure (hepatic flexure) beneath the liver and extends across the abdomen to the left colic flexure (splenic flexure).
Although the transverse colon crosses both upper quadrants of the abdomen, considering its association with the gallbladder and its proximity to it at the hepatic flexure, the correct quadrant for the context of this question is the upper right quadrant.