Cardiac end of stomach lies at which rib?
**Core Concept**
The cardiac end of the stomach is the junction between the stomach and the esophagus, where the lower esophageal sphincter is located. This region is anatomically significant due to its proximity to the diaphragm.
**Why the Correct Answer is Right**
The cardiac end of the stomach is situated at the level of the tenth thoracic vertebra (T10) and the tenth rib. This is because the esophagus passes through the diaphragm at the esophageal hiatus, which is located at the level of T10. As a result, the cardiac end of the stomach is positioned just below the diaphragm, at the level of the tenth rib.
**Why Each Wrong Option is Incorrect**
**Option A:** The seventh rib is too high to be the level of the cardiac end of the stomach.
**Option B:** The eleventh rib is too low to be the level of the cardiac end of the stomach.
**Option C:** The ninth rib is close but not as accurate as the tenth rib.
**Clinical Pearl / High-Yield Fact**
The location of the cardiac end of the stomach is important to remember during procedures such as percutaneous endoscopic gastrostomy (PEG) placement or during surgical interventions in the upper abdomen.
**Correct Answer:** D. 10th rib