What is angina?

Angina refers to chest pain or discomfort that arises when the heart muscle does not receive enough oxygenated blood. This typically occurs due to narrowing of the coronary arteries, which can lead to reduced blood flow, especially during physical exertion or stress when the heart requires more oxygen. The sensation can vary; it may feel like pressure, squeezing, fullness, or pain in the center or left side of the chest. It is an important symptom that can indicate underlying heart disease, such as coronary artery disease.

Understanding this definition is vital for recognizing the significance of angina within the context of cardiovascular health. While muscle pain, neck pain during exercise, or stomach aches can be attributed to various other conditions, angina specifically pertains to the heart and its oxygen supply, highlighting the critical role of proper cardiovascular functioning. Hence, option B captures the essence of angina effectively.