The term that means "surgical removal of the inner lining of a clogged artery leading to the brain" is **carotid endarterectomy**. This procedure is performed to remove plaque buildup from the carotid artery, which is the main artery that supplies blood to the brain. Here's why it is the correct term:
1. **Carotid Endarterectomy**:
- This procedure involves making an incision in the neck, accessing the carotid artery, removing the inner lining that is clogged with plaque, and restoring proper blood flow to the brain.
- It is a surgical treatment aimed at reducing the risk of stroke by preventing pieces of plaque from breaking off and traveling to the brain.
In contrast, the other terms mentioned are:
- **Electrogram**: This term refers to a recording of the electrical activity of the heart.
- **Angioplasty**: This is a procedure to widen narrowed or obstructed arteries or veins, often using a balloon catheter.
- **Angiogram**: This term refers to an X-ray study of the blood vessels after the injection of a contrast medium.
Therefore, the correct term specifically for the surgical removal of the inner lining of a clogged artery leading to the brain is **carotid endarterectomy**.
