Question:
Marked area in the given image is supplied by which dermatome?
Marked area in the given image is supplied by which dermatome?
Updated On: Jul 12, 2025
- T8
- T9
- T10
- T11
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The Correct Option is C
Solution and Explanation
To determine which dermatome supplies the marked area on the image, we need to understand the pattern of dermatome distribution on the human body. A dermatome is an area of skin that is mainly supplied by a single spinal nerve. These are particularly organized and can help identify specific areas of sensory nerve roots.
The thoracic dermatomes (T1-T12) cover the chest and abdomen. The distribution of these dermatomes generally follows a horizontal pattern:
- T8: Located just below the sternum, around the level of the xiphoid process.
- T9: Covers the area just above the umbilicus.
- T10: Directly covers the umbilical region (around the belly button).
- T11: Lies below the umbilicus, between T10 and T12.
Based on this layout, if the marked area is at or around the position of the umbilicus, it is primarily innervated by the T10 dermatome. Therefore, the correct answer is:
T10
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