When you exercise, you work your muscles, including your heart. The faster your heart rate gets while exercising, the less it has to work, and the healthier you get. I assume, since your heart beats faster, your blood circulates faster. Basically, if your blood circulates faster, it brings more oxygen to your muscles so they won't tire out. Your circulatory system works the same, just faster.
EDIT: A healthy heart actually beats SLOWER because the body doesn't have to work that hard to circulate the blood throughout the body.
It's harder for people with healthy hearts to get their heart rates up during exercise, on the other hand it's easier for heavier/unhealthy people to get the rate up. This is why heavier people tend to lose weight easier than thin people.
It depends on what type of exercise the person is doing. There are low and High intensity aerobics, non-aerobic weight lifting. Think of your body as a car. To go faster you burn more fuel (glucose), you need higher air intake through the carburator(lungs), you need coolant to maintain safe operating temperature (blood stream), you need a faster working fluid pump (heart). The diffenence between weight lifting and low intense aerobics is that they are slower and thus can burn more slow processed fats. Glucose(sugar) is a faster processed fuel for high intense activity, and that is why you need to carb load for them.
No smoking, no overeating, some exercise.
no
circulatory system
Bacteria do not have a circulatory system
circulatory system
Exercise and a healthy diet leads to maintaining a strong circulatory system because people who eat poorly can have clogged circulatory passageways. The circulatory system is also propelled by a system of muscles, therefore exercise may increase the efficiency of overall muscle performance. Exercise also increases heart rate, and makes the heart stronger. Since the heart is one of the main pumps of the circulatory system, a stronger heart would prove to create a stronger circulatory system.
When sleeping the body's circulatory system begins to slow down. It is easier for the blood to circulate throughout the body.
You can help the circulatory system by maintaining a healthy weight and avoiding smoking. Getting regular exercise is also important.
You get the heart attack, because of lack of exercise. Exercise keeps your heart and circulatory system, healthy. If your circulatory system is defective, you may get heart attack during sleep also. So many times you wake up in the morning to find that you are dead due to heart attack, that you got during the sleep. :)
Yes.
It grinds away until you fall down.
Your hear rate increases because it is trying to pump out more blood.
The circulatory system does not maintain homeostasis. Homeostasis is maintained by the kidneys and the hypothalamus. If the circulatory system is out of homeostasis, then there are many abnormal conditions that can result. The number one cause of death in the US is cardiovascular disease. This is due to atherosclerosis and hypertension. These are the result of an unhealthy diet and lack of exercise as well as depression as a result of a stressful environment that is common in our culture. When all these factors come into play, the system that is affected the most happens to be the circulatory system. It is not the causative factor in a homeostasis imbalance, but that is where it most often shows up as pathology.
It returns to the circulatory system
No smoking, no overeating, some exercise.
during cellular respiration
The nervous system receives information and by the sensory nerves it transports to the brain what you learnt.