It is a large muscle which constantly exercising your entire lifetime. However, the human brain requires even more glucose and oxygen. The brain consumes 20% of the energy available.
Because your muscles need oxygen and oxygen is in the blood so the heart pumps bloid around the body
it adjusts the heart rate to correspond to the body's need for oxygen
Your muscles need a higher demand of oxygen during strenous exercise. That's when the brain realises that there needs to be more blood pumped round the body, in order to duly deliver oxygen with it to the muscles. Therefore the heart starts pumping faster, to pump more blood and therefore more oxygen to the body. i hope that's what you asked:)
The heart pumps oxygen-rich blood through arteries which take the blood to muscles. Then when the oxygen is deprived of its oxygen it is pumped back to the heart where it is then sent to the lungs for more oxygen. It then repeats the process. This process is important because your muscles need oxygen to function.
If the oxygen-rich blood and the oxygen poor blood mix the amount of oxygen becomes diluted. The cells and tissues need more oxygen than they will get.
when doing exercise you need oxygen in your muscles so the blood pumps oxygenated blood around your body quicker to keep the oxygen levels up and make sure there is food at the muscles in the form of glucose
glucose and oxygen
Oxygen is produced as a by-product of photosynthesis.
Glucose and oxygen
Oxygen is essential for the process of cellular respiration, where it helps produce energy in the form of ATP. Our cells need oxygen to break down glucose and other nutrients to release this energy. Oxygen is also necessary for maintaining the function of vital organs, such as the brain and heart.
Cells need energy to work, but they get this from using oxygen and glucose to respire, Oxygen + Glucose -> Water + Carbon dioxide and produces energy When oxygen is not available, the body can survive on anaerobic respiration for a short period of time. Glucose -> Lactic acid + Carbon dioxide
Oxygen & Glucose
The heart beats accelerates because your organs need more oxygen and the heart pumps the oxygen into the blood and when you need more oxygen than normal your heart rate is faster than normal.
When you are exercising you use your energy up and that's why you breathe fast but in order to get more energy you need more oxygen and glucose. To get more oxygen you need to breathe faster and to get more glucose you need to eat or drink something containing sugar, because glucose is a sugar.
Mitochondria require oxygen, glucose, and other nutrients to function effectively. Oxygen is needed for cellular respiration, while glucose and other nutrients provide the energy source for the mitochondria to produce adenosine triphosphate (ATP), the cell's primary energy source.
The primary products released after photosynthesis are oxygen and glucose. Oxygen is released as a byproduct of the light-dependent reactions, while glucose is formed as a result of the light-independent reactions.
Body cells need oxygen and glucose for respiration. Oxygen is carried by red blood cells in the bloodstream, while glucose is carried as blood sugar in the bloodstream. Both oxygen and glucose enter cells through their respective transporters: oxygen enters through respiratory membranes, and glucose enters through glucose transporters in the cell membrane.