Which dermatome is on the inner aspect of the forearm?

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Multiple Choice

Which dermatome is on the inner aspect of the forearm?

Explanation:
The inner (medial) aspect of the forearm is the territory served by the T1 dermatome, which runs along the medial forearm via the medial antebrachial cutaneous nerve. Dermatomes map skin areas to specific spinal nerve roots, and T1 specifically covers the medial forearm, not the lateral forearm or other regions. In contrast, C6 covers the lateral forearm and thumb, L4 the medial leg/ankle region, and S1 the posterior-lateral leg and foot. So sensation on the inner forearm best fits the T1 dermatome.

The inner (medial) aspect of the forearm is the territory served by the T1 dermatome, which runs along the medial forearm via the medial antebrachial cutaneous nerve. Dermatomes map skin areas to specific spinal nerve roots, and T1 specifically covers the medial forearm, not the lateral forearm or other regions. In contrast, C6 covers the lateral forearm and thumb, L4 the medial leg/ankle region, and S1 the posterior-lateral leg and foot. So sensation on the inner forearm best fits the T1 dermatome.

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