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respiratory physiology
the respiratory system process essay
the respiratory system process essay
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Aerobic: in general
1. occurs in presence of oxygen.
2. CO2 and water is produced
3. lot of energy is liberated (38 ATP)
4.occurs in plants' and animals' cells
5. C6H12O6 --> CO2 + H2O + ATP (Energy)
ATP from aerobic respiration of glucose
For longer periods of exercise muscle cells need oxygen supplied by the blood for aerobic respiration. This provides far more energy (36 molecules of ATP from each molecule of glucose), but the rate at which it can be produced is limited by how quickly oxygen can be provided. This is why you can’t run a marathon at the same speed as a sprint.
Anaerobic:
1. occurs in absence of oxygen
2. Lactic Acid or Alchol is produced
3. relatively small energy is liberated (2ATP)
4. occurs in many anaerobic bacteria and human muscle cells.
5. in muscles, lactic acid is produced while bacteria as Yeast produces Alcohol (Ethanol)
6. C6H12O6 --> Lactic acid / C2H5OH + ATP
ATP from anaerobic respiration of glucose
Anaerobic respiration doesn’t provide much ATP (2 ATP molecules for each glucose molecule),but it is quick, since it doesn’t r...
The data collected during this experiment has shown that a relationship likely exists between the rate of muscle fatigue and the time spent performing vigorous exercise prior to the set of repetitive movements. This is likely due to a build-up of lactic acid and lactate as a result of anaerobic respiration occurring to provide energy for the muscle cell’s movement. As the pH of the cell would have been lowered, the enzymes necessary in the reactions would likely not be working in their optimum pH range, slowing the respiration reactions and providing an explanation to why the average number of repetitions decreased as the prior amount of exercise increased.
Because as you exercise the cells in your body will need more oxygen. So therefore, the heart will pump harder to get more oxygen
Do you know how you are able to run long distances or lift heavy things? One of the reasons is cellular respiration. Cellular respiration is how your body breaks down the food you’ve eaten into adenosine triphosphate also known as ATP. ATP is the bodies energy its in every cell in the human body. We don’t always need cellular respiration so it is sometimes anaerobic. For example, when we are sleeping or just watching television. When you are doing activities that are intense like lifting weights or running, your cellular respiration becomes aerobic which means you are also using more ATP. Cellular respiration is important in modern science because if we did not know about it, we wouldn’t know how we are able to make ATP when we are doing simple task like that are aerobic or anaerobic.
When you exercise or actually when you just move, you spend your energies. Energy is needed for the body to move and stay alive and grow to keep the body warm.
However, in anaerobic respiration (glycolysis and fermentation) only two (2) adenosine triphosphate (ATP) can be obtained. Now, for photosynthesis it is actually a carbon-fixation which is 3CO2+9ATP+6NADPH+H2O--- glyceraldehyde3phosphate+8Pi+9ADP+6NADP which turns out to just be eight-teen (18) ATP per glucose molecules in
The extra heat produced during metabolic exchange, raises the body temperature again affecting the enzymes and heat is then removed by sweating. If the body isn’t kept hydrated during exercise, dehydration will occur, causing the blood to become concentrated. When the blood becomes concentrated, the cells no longer have enough water to function.
The main reason for all of these factors is aging. As a person gets older the body has to work harder to maintain the same capacities that the body could do at a younger age. As individuals get older the factors that affect performance continue to decline in a curvilinear fashion until the athlete reaches 60-70, and at that point the factors begin to decline exponentially. One of the biggest components of aging is that an athlete’s muscles begin to become more fatigued and damaged more when performing in an exercise session. Muscular fatigue is a very strong indicator of how the body can function and maintain hemostasis under the stress of exercise. As a person gets older these seems to be three different components that cause this increase in muscle fatigue and damage. These three are that older individuals are far more susceptible to muscle damage because the age of their muscles, older individuals have a poorer regeneration of the muscle fibers that are torn during exercise, and older individuals have and incomplete functional recovery of skeletal muscles causing them to be sorer for longer periods of time. One of the ways that these factors were tested was having older individuals perform a max voluntary contraction (MVC) before and after a long distance activity (55km trail run), and comparing them to younger athletes. (Brisswalter) This would allow researchers to see if the master athletes are fatiguing faster that the younger ones. After the research was done it was found that both before and after the run that the master athletes could not hold their MVC as long as younger athletes could. This is a prime example of how aging can effect the intensity and performance of master athletes compared to younger athletes in the same competitions. This research can be seen on the
Muscle biopsies to measure muscle glycogen were taken before excercise, after 2 and 3 hours of exercise, and at the time of fatigue (when the cyclists could no longer work at 70% of their aerobic capacity). Blood samples were also taken every twenty minutes and upon fatigue. These blood samples were used to quantitatively analyze the glucose levels in the blood at the various times.
When you exercise your muscles use up your energy and will trigger a series of reactions to create more energy to keep you going, and maintain your its’ homeostasis. The first body system exercise will effect is the respiratory. While you exercise your breathing rate will increase bringing in oxygen for energy creation. To provide your body with oxygen, the respiratory system increases its speed to put it into your blood stream. The more intense your exercise is the more energy is used and needed. This results in your breathing rate to increase even more to maintain a sufficient supply of energy levels.
Long distance swimmers usually swim marathons in salt water, which is very different from swimming in a pool. Because of the intensity of the activity, a long distance swimmer will obviously burn a large number of calories. Studies show that even in short events, blood glucose levels rise as the liver mobilizes sugars used in muscle metabolism faster than the muscles can process them. High blood sugar levels then flood the muscle cells where sugar are turned into ATP using the oxygen requiring process of aerobic respiration. When oxygen levels fall in the active cells, they switch to a less efficient process leading to the production of lactic acid. Blood lactate levels then rise indicating high levels of muscle
Koga et al (1997) proposed that an elevated muscle temperature, as a result of warm up leads to enhance aerobic energy production by accelerating the rate limiting associated with oxidative phosphorylation and speeding the increase of oxygen delivery to the capillaries and mitochondria. Increased muscle temperature (Tm) during exercise would results in enhanced oxygen unloading from haemoglobin. A rightward shift in the O2- haemoglobin dissociation curve may have occurred as a result of increase in blood temperature in the muscle tissues.
Nevertheless, endurance trained muscles are more effective at clearing plasma triglyceride, free fatty acids and glucose. Endurance exercises increases in the mitochondria and glucose begins to transport in the muscle. In addition, endurance exercises such as prolonged running makes an increase in muscle respiratory capacity. However, this adaptation includes increases in components of the mitochondrial respiratory chain (Agergaard, J. 2015). Muscle adaptation to aerobic exercise is similar to strength training adaptation. While performing aerobic exercises, the number if mitochondria begins to increase. Not to mention, cardiovascular training increases the number of capillaries that bring oxygen into the mitochondria. With more fuel in the muscles they can endure longer periods of exercise, but the adaptations have its different limits. In despite of the duration and intensity of a persons’ training, it is vital to understand that a person may reach their peak efficiency in as little as four or five weeks. Exercise training is also an adaptive process and the body will begin to adapt to the stress of exercise with increased fitness above a moderate threshold intensity. To achieve a greater effectiveness, always consider the factors involved in adaptations of muscle to stress and decondition. The factors that are involved are specificity, overload, progression, and
In some way, shape, or form energy is one of the several reasons why there is an existence of life on earth. Cellular respiration and Photosynthesis form a cycle of that energy and matter to support the daily functions that allow organisms to live. Photosynthesis is often seen to be one of the most important life processes on Earth. Photosynthesis is a process by which plants use the energy of sunlight to convert carbon dioxide and water into glucose so other organisms can use it as food and energy. It changes light energy into chemical energy and releases oxygen. This way organisms can stay alive and have the energy to function. Chlorophyll is an organelle generally found in plants, it generates oxygen as a result too. As you can see without
TutorVista.com (2015), states that; “photosynthesis and cellular respiration are metabolic reactions that complete each other in the environment. They are the same reactions but occur in reverse. In photosynthesis, carbon dioxide and water yield glucose and oxygen respiration, process glucose and oxygen yield carbon dioxide and water, catabolic pathway process which requires or contains molecular oxygen for the production of adenosine triphosphate. This three step aerobic respiration cycle occurs in the cytoplasm and in the organelles called mitochondria. Within this process, cells break down oxygen and glucose in its storable form called adenosine triphosphate or ATP. This cellular respiration or sometimes called an exothermic reaction is similar to a combustion type reaction whereby the cell releases energy in the form heat but at a much slower rate within a living cell. According to our text, Campbell Essential Biology with Physiology, (2010, pg. 94), cellular respiration is stated as “The aerobic harvesting of energy from food molecules; the energy-releasing chemical breakdown of food molecules, such as glucose, and the storage of potential energy in a form that cells can use to perform work; involves glycolysis, the citric acid cycle, the electron transport chain, and chemiosmosis”. It is also my understanding that it is possible for cellular respiration to take place without oxygen, which is called anaerobic respiration. In the anaerobic respiration process the glycosis step or sometimes referred to as the metabolic pathway process deferrers because the anaerobic condition produces
These results make sense because the heart beats faster in order to keep the body’s cells well equipped with oxygen. For one to continue exercising for long amounts of time, cells need to create ATP in order to use energy. Oxygen must be present for the process of creating ATP, which not only explains why higher respiratory rates occur during exercise but also faster heart rates. When the heart is beating rapidly, it is distributes oxygenated blood as fast as the body n...