Cystic aery is usually derived from:
**Core Concept**
Cystic artery is a vital branch of the hepatic artery that supplies blood to the gallbladder. It plays a crucial role in maintaining the gallbladder's function and integrity. The cystic artery is derived from the right hepatic artery or the cystic artery may arise directly from the proper hepatic artery.
**Why the Correct Answer is Right**
The cystic artery is usually derived from the right hepatic artery, which is a branch of the proper hepatic artery. The right hepatic artery arises from the common hepatic artery, which is a branch of the celiac trunk. The cystic artery then supplies the gallbladder with oxygenated blood, allowing it to perform its function of storing and concentrating bile.
**Why Each Wrong Option is Incorrect**
* **Option A:** Incorrect because the cystic artery does not typically arise from the left gastric artery, which is primarily involved in supplying the stomach.
* **Option B:** Incorrect because the cystic artery does not usually arise from the splenic artery, which is involved in supplying the spleen and pancreas.
* **Option C:** Incorrect because the cystic artery does not typically arise from the gastroduodenal artery, which is involved in supplying the stomach and duodenum.
**Clinical Pearl / High-Yield Fact**
The cystic artery is a common site for gallstone disease and cholecystitis due to its proximity to the gallbladder and its role in supplying the gallbladder with oxygenated blood.
**Correct Answer: C. Right hepatic artery.**