Question

which process occurs when a small group of cells are using oxygen (o2) and producing carbon dioxide (co2) faster than these gases can normally be replaced and removed at the capillaries? a) arterioles dilate, delivering more blood. b) heart rate increases, delivering more blood. c) autonomic system causes vasodilation, delivering more blood. d) anaerobic metabolism occurs, due to lack of oxygen.

Answer 1

When a small group of cells are using oxygen (O2) and producing carbon dioxide (CO2) faster than these gases can normally be replaced and removed at the capillaries, anaerobic metabolism occurs due to the lack of oxygen.

Step-by-step explanation:

When a small group of cells are using oxygen (O2) and producing carbon dioxide (CO2) faster than these gases can normally be replaced and removed at the capillaries, anaerobic metabolism occurs due to the lack of oxygen. Anaerobic metabolism is a process in which cells produce energy without the use of oxygen. It results in the production of lactic acid, which can cause muscle fatigue and cramps.

This situation can occur during intense exercise when the demand for oxygen exceeds the supply, leading to a buildup of carbon dioxide. The increased production of carbon dioxide triggers the body's response to increase oxygen supply by increasing heart rate (option b) and dilating arterioles (option a). These responses deliver more blood, and therefore more oxygen, to the working muscles.