A man is shot in the head, and the bullet stops just outside the dura nater. What is the innermost layer that the bullet has penetrated? A. Skin B. Bone C. fat D. Periosteum I think it is BONE from what I have seen in the diagram
To determine the innermost layer that the bullet has penetrated in this scenario, we need to understand the layers of the head.
The layers of the head, from outermost to innermost, are as follows:
1. Skin: The outermost layer that covers the head.
2. Bone: Beneath the skin is the skull, which protects the brain. The skull is made up of several bones, including the frontal bone, parietal bones, temporal bones, and occipital bone.
3. Dura mater: After the skull, the next layer is the dura mater, which is a thick and tough membrane that surrounds and protects the brain. It is the innermost layer that the bullet stops just outside of.
4. Brain: The brain itself is the innermost structure, which is protected by the dura mater.
Based on this information, the innermost layer that the bullet has penetrated is the dura mater (layer 3). Therefore, the correct answer is not BONE, but D. Periosteum. The periosteum is the outermost layer of the bone, and in this scenario, the bullet has not reached the bone layer itself.