Describe what is happening in your cardiovascular system when you are increasing blood flow?

During exercise stroke volume increases because more blood is sent back to the heart due to the muscles squeezing blood in the veins

The heart and the circulatory system are responsible for moving blood throughout the body. As the heart beats in the chest, it pushes blood out through arteries to nourish cells with oxygen and nutrients. When you are increasing blood flow, the circulatory system pushes more blood throughout your body which causes your heart to beat faster in order to push more blood and nourish your body.

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.