Thrombosis of the right middle cerebral artery would most likely cause which condition?

Thrombosis of the right middle cerebral artery predominantly affects the blood supply to the lateral aspect of the brain's right hemisphere, which includes regions responsible for motor control and sensory processing of the left side of the body. As a result, this condition most commonly leads to left-sided paralysis or weakness, particularly noticeable in the face and arm. The middle cerebral artery supplies areas that control facial movements and arm function, which is why weakness in these parts is emphasized.

The fact that the paralysis occurs on the left side is due to the concept of contralateral control in the brain, where each hemisphere controls movement and sensation on the opposite side of the body. Thus, damage to the right side from a thrombosis in the right middle cerebral artery manifests as issues on the left side.