In this illustration of a closed head injury,the area indicated by the number 2 is known as a

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The area indicated by the number 2 in the illustration is where the brain has experienced contrecoup injury. This means that the brain has been injured on the opposite side of the initial impact, as a result of the brain hitting the skull during the rebound of the initial impact. Therefore, the best choice is D, countercoup. A is incorrect because an embolism is a blockage of a blood vessel by an embolus, which is a traveling material in the bloodstream. B is incorrect because a thrombosis is a blood clot that forms inside a blood vessel, interrupting normal blood flow. C is incorrect because coup refers to the initial impact or injury on the side of the brain that was hit.

In This Illustration of a Closed Head Injury,the Area Indicated