cardiac reactions

Cardiac reactions refer to the body’s response to various stimuli, especially concerning heart function. These reactions can include changes in heart rate, blood pressure, and blood flow in response to factors like exercise, stress, or illness. For instance, during exercise, the heart beats faster to supply more oxygen to muscles. Conversely, stress can trigger the "fight or flight" response, increasing heart rate and blood pressure. Understanding these reactions helps us appreciate how the heart adapts to maintain health and respond to challenges.