The gradual occlusion of which arteries may lead to transient ischemic attacks due to a specific condition?

The internal or common carotid arteries play a critical role in supplying blood to the brain. When these arteries experience gradual occlusion, it can lead to reduced blood flow and the risk of transient ischemic attacks (TIAs). TIAs are often considered warning signs of a potential stroke, as they result from temporary blockage of blood flow to the brain, leading to neurological symptoms that resolve within a short period.

The condition leading to the occlusion of these arteries is commonly atherosclerosis, a process where fatty deposits build up on artery walls, narrowing the vessels and restricting blood flow. Therefore, when occlusion occurs in the internal or common carotid arteries, it may lead to inadequate perfusion of cerebral tissues and transient neurological deficits, characteristic of TIAs.

Other arteries mentioned do not have the same direct connection with TIAs. The subclavian arteries primarily supply blood to the arms and do not directly influence cerebral blood flow in the same manner. Cerebral arteries, while critical to brain perfusion, are typically involved in more acute ischemic strokes rather than the gradual occlusion leading to TIAs. Coronary arteries are essential for heart blood supply, and their occlusion would lead to cardiac events rather than directly causing TIAs. Thus, the internal