Ace the COMLEX USA 2026 – Osteopathic Superstars, Get Ready to Shine!

Question: 1 / 400

What dermatome corresponds with the area covering the medial upper arm?

C5

C8

T1

The area covering the medial upper arm is primarily associated with the T1 dermatome. Dermatomes are regions of skin that are primarily supplied by a single spinal nerve root. The T1 nerve root contributes to sensory innervation of the skin at the medial aspect of the upper arm. Understanding the mapping of dermatomes is essential for clinical practice, especially in diagnosing neuropathies or assessing nerve injuries.

While the other choices may correspond with different parts of the upper limb or skin, they do not specifically relate to the medial aspect of the upper arm. C5 is associated more with the shoulder and lateral upper arm, C8 typically covers the skin over the medial forearm and some of the hand, and T4 corresponds to the level of the nipple area. Therefore, the T1 dermatome is the accurate answer for the area in question.

Get further explanation with Examzify DeepDiveBeta

T4

Next Question

Report this question

Download Comprehensive Osteopathic Medical Licensing Examination (COMLEX USA) Practice PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy