Angina is often felt in the upper left chest and arm because

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Quizplus · Accepted Answer

Angina is caused by reduced blood flow and oxygen to the heart muscle. However, the pain is not always felt in the heart itself because the nerve fibers that carry pain signals from the heart also extend to other areas of the body. This phenomenon is called "referred pain," where the pain is felt in a different area than the site of the problem. In the case of angina, the pain is often felt in the upper left chest and arm because the nerves that transmit pain signals from the heart also travel to these regions and are interpreted by the corresponding region of the primary sensory cortex.

Angina Is Often Felt in the Upper Left Chest and Arm