Higher level of carbon dioxide would lower the blood pH and would raise the acidity. This leads to an increase in the breathing rate which in turn would result in increase in cardiac output which would then increase the heart rate!
Best Answer: Hgher level of carbon dioxide would lower the blood pH and would raise the acidity. This leads to an increase in the breathing rate which in turn would result in increase in cardiac output which would then increase the heart rate! So, to summarize: There is high levels of carbon dioxide in the blood stream because of the high heart rate, from metabolic activities. The carbon dioxide alone doesn't increase the heart rate whatsoever. Source(s): A.P. Bio student. Your heart speeds up to pump extra food and oxygen to the muscles. Breathing speeds up to get more oxygen and to get rid of more carbon dioxide. When a fit person, such as an athlete, exercises the pulse rate, breathing rate and lactic acid levels rise much less than they do in an unfit person. This increases the need for both food and oxygen in the body. This is why your pulse rate and breathing rate increase with exercise. Your pulse is just an indication of your heart rate as your arteries expand each timethe ventricles pump blood out of the heart. Breathing speeds up to get more oxygen and to get rid of more carbon dioxide. When a fit person, such as an athlete, exercises the pulse rate, breathing rate and lactic acid levels rise much less than they do in an unfit person. Most websites I've come across attribute the heart rate increase to the caffeine content, but since coffee (which contains m … ore than double the amount of caffeine that soda pop does on average) does not increase my heart rate, I will attribute the cause to the carbon dioxide. So breathing does not increase or decrease the amount of carbon dioxide in the atmosphere. Judy Olmsted. 79,105 Contributions. Retired college science professor. Member of Beta Beta Beta Biological Honor Society. Member of the American Chemical Society (ACS). Exercise. In response to exercise, both aerobic and strength training, your heart rate increases. As the physiological demands of the activity increase, so too does heart rate. The heart beats faster during exercise to pump more blood to the working muscles. An increased heart rate, also known as tachycardia, is a heart rate that's beyond the normal range for a typical resting heart rate. Resting heart rates are the number of times per minute that your heart beats while you're at rest or sleeping. Report Abuse. High levels of carbon dioxide are the products of high metabolic activities. High levels of carbon dioxide do not increase the heart rate, but rather, the heart increases in rate due to the high level of metabolic activities, which produces high level of carbon dioxide. So, to summarize: There is high levels of carbon dioxide in the blood stream because of the high heart rate, from metabolic activities. The carbon dioxide alone doesn't increase the heart rate whatsoever. Source(s): A.P. Bio student. Best Answer: An increased heart rate means that the heart is doing more work on the blood. This means that the heart is creating more carbon dioxide at a higher heart rate. Increased carbon dioxide in the blood does not increase the heart rate. It does increase the respiratory rate. There is a group of neurons in the fourth ventricle of the brain that senses the pH of the cerebrospinal fluid. A drop in the pH results in an increase in the respiratory rate.  In response to exercise, both aerobic and strength training, your heart rate increases. As the physiological demands of the activity increase, so too does heart rate. An increased heart rate, also known as tachycardia, is a heart rate that's beyond the normal range for a typical resting heart rate. Resting heart rates are the number of times per minute that your heart beats while you're at rest or sleeping. Best Answer: As far as I know, carbon dioxide doesn't directly effect blood pressure and pulse rate. Blood oxygen levels are the primary determinate of those vital stats. Blood carbon dioxide levels primarily change the pH of blood and regulate the breathing reflex. I suppose that if your blood CO2 levels get too high, your respiration rate would increase. This increase would keep changing the pressure in the thoracic cavity, increasing venous return in the vena cava. The rate and depth of your breathing will increase as a result of the increase in CO2. (Accumulation of CO2 can occur drastically during periods of heavy activity). Especially during exercise, your body wants to get rid of this CO2 (because this makes the blood more acidic), and gain more oxygen.
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does an increase in co2 levels cause the heart rate to increase?