All of the following arteries supply medulla oblongata, except –
💡 Explanation
**Core Concept**
The medulla oblongata is the lowest part of the brainstem, and it receives blood supply from various arteries that arise from the vertebral and basilar systems. The blood supply to the medulla is crucial for its function, and any compromise can lead to serious neurological deficits or even death.
**Why the Correct Answer is Right**
The medulla oblongata is primarily supplied by branches from the vertebral arteries, specifically the anterior spinal artery and the posterior inferior cerebellar arteries (PICA). In addition, the posterior inferior cerebellar arteries also give off branches that supply the lateral medulla. The anterior inferior cerebellar arteries (AICA) are not a primary supplier of the medulla oblongata. Instead, they primarily supply the cerebellum and the anterior inferior part of the temporal lobe.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided, but it should be one of the arteries mentioned above.
**Option B:** This option is not provided, but it should be one of the arteries mentioned above.
**Option C:** This option is not provided, but it should be one of the arteries mentioned above.
**Option D:** This option is not provided, but it should be one of the arteries mentioned above.
**Clinical Pearl / High-Yield Fact**
In addition to the arteries mentioned above, the medulla oblongata is also supplied by the internal carotid artery via the posterior communicating artery, which is a part of the circle of Willis. This is an important anatomical variation to remember for neurosurgical procedures.