Initial and Steady State Responses Essay

1496 WordsSep 13, 20156 Pages
Initial and Steady State Responses In this report I am going to explain what the 4 different systems are that happen within the body. The Cardiovascular system, respiratory system, neuromuscular system and the energy system. I am going to talk about these in relation to exercise. This will include the initial response and steady state exercise. The human body is made up of many different systems which enable our body to work. One is the cardiovascular system. Within the cardiovascular system many things happen to keep everything right before and during exercise. One of the first things that happen on the onset of exercise is the ‘anticipatory rise’. The anticipatory rise is the increase of your heart rate due to your nervous system releasing a chemical called adrenaline(also known as epinephrine) into your system when you know you’re about to participate in exercise. One effect of the adrenaline is to make the heart beat faster due to the higher demand of oxygen needed for the working muscles. As you start to exercise the levels of CO2 and lactic acid in your body increase too, this is then detected by the chemoreceptors; they then trigger the sympathic nervous system to increase the release of adrenaline to continue to increase the heart rate. As your start to exercise more and more your heart rate will increase; your heart rate is the amount of times your heart beats in 1 minute. Upon the onset of exercise your stroke volume will also increase. Your stroke volume is the amount of blood pumped of the left ventricle per contraction-measured In ml/beat. The stroke volume increases when you exercise, an average person’s resting stroke volume is 5L per min but when exercising it can increase up to 30L/min. the reason for this is the working muscles need more oxygen so your heart beats faster but to make it more efficient more blood is pumped out with each

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