Question

Which of the following is NOT a boundary of the structure shown in the given image?

• A. Common hepatic duct
• B. Cystic duct
• C. Inferior surface of the liver
• D. Gall bladder

Hint:

Calot's triangle borders are common hepatic duct, cystic duct, and inferior liver surface.

Answer 1

The Correct Option is D

Step 1: The image depicts Calot's triangle (the cystohepatic triangle), a small anatomical space at the porta hepatis where the hepatic ducts and neurovascular structures enter and exit the liver.
Step 2: Its three boundaries in the modern definition are: medial - common hepatic duct; inferior - cystic duct; superior - inferior surface of the liver.
Step 3: The gall bladder itself is not a boundary of this triangle. The cystic artery lies within the triangle and was the superior border in the original 1891 description, later revised because of its variable course.
Step 4: Since common hepatic duct, cystic duct, and inferior surface of liver are all true borders, the option that is NOT a boundary is the gall bladder.