Question

how does the heart meet the demand for oxygenated blood during physical activity? increasing cardiac output, decreasing stroke volume, increasing heart rate decreasing cardiac output, increasing stroke volume, increasing heart rate increasing cardiac output, increasing stroke volume, increasing heart rate decreasing cardiac output, decreasing stroke volume, decreasing heart rate

Explanation:

During physical activity, the body needs more oxygen - rich blood. The heart increases cardiac output (the amount of blood pumped per minute). Cardiac output is the product of stroke volume (amount of blood pumped per beat) and heart rate (beats per minute). To meet the demand, the heart increases both stroke volume and heart rate.

Answer:

Increasing cardiac output, increasing stroke volume, increasing heart rate