Which GB point is located on the mid-axillary line in the fifth intercostal space?

Which GB point is located on the mid-axillary line in the fifth intercostal space?

• A. GB 23
• B. GB 22
• C. GB 24
• D. GB 21

Answer: (C)

The key idea is using surface landmarks to map the Gallbladder channel on the side of the chest. The mid-axillary line runs down the side of the body through the middle of the armpit, and the intercostal spaces are counted from the upper ribs downward. The spot described as being on the mid-axillary line in the fifth intercostal space corresponds to Gallbladder point 24 in standard charts used for this material. That’s why this choice fits the location given by the question. The other nearby lateral-chest points lie in adjacent interspaces or along slightly different lines, so they don’t match this exact description.

The key idea is using surface landmarks to map the Gallbladder channel on the side of the chest. The mid-axillary line runs down the side of the body through the middle of the armpit, and the intercostal spaces are counted from the upper ribs downward. The spot described as being on the mid-axillary line in the fifth intercostal space corresponds to Gallbladder point 24 in standard charts used for this material. That’s why this choice fits the location given by the question. The other nearby lateral-chest points lie in adjacent interspaces or along slightly different lines, so they don’t match this exact description.