Anaerobic Respiration is what happens if there’s no oxygen available. Anaerobic respiration happens when you do vigorous exercise and your body cannot supply enough oxygen to your muscle, which builds up Lactic Acid in the muscles, which can be painful. After Anaerobic Respiration you will have to recuperate the oxygen that was not managed in your muscles in time, by breathing hard for a while, because your lungs, heart, and blood couldn’t keep up with the demand of oxygen earlier on. (Oxygen Debt) The pulse and breathing rate increase to recover the situation when the level of CO2 and lactic acid is found in the blood. (By the brain)
Skin is made up of dead cells, it is waterproof, and acts like an antiseptic that maintains a constant internal environment. Skin helps you from drying up (Dehydrating), keeps germ out and controls the body temperature. When Anaerobic Respiration happens, the blood rate increases so the capillary opens up and produces sweat, sweat cools us down when it evaporates, as the heat is carried away with the vapour. In our bodies certain muscle cells, called fast twitch muscles, have less capability for storing and using oxygen than other muscles. When you run and these muscles run short of oxygen, the fast twitch muscles begin using lactic acid. This allows the muscle to continue to function by producing ATP by glycolysis.
The muscles get enough ATP for quick sprints, but quickly become fatigued as their stores of glycogen are used up. Eventually you get a cramp. This is in part because the muscles lack sufficient ATP to continue contracting. Also, lactic acid builds up and must be taken away by the liver. Runners who sprint actually have more muscle cells specialized for lactic acid fermentation than long distance runners.
Too Hot:
1) Hairs lie flat
2) Sweat is produced to cool you down
3) Blood supply to the skin opens up to release body heat. This is called Vasodilatation.
Too Cold:
- Hairs stand on end to keep you warm.
- No sweat is produced
- Blood supply to the skin closes off. This is called vasoconstrictions.
Hypothesis: We are going to test out the amount of sweat production compared to how many heart beat per minute that occurs before and after vigorous exercise. I predict that the more exercise we do, our heart would beat faster and would produce more sweat. This is because when vigorous exercise start; your body cannot supply enough oxygen to your muscles, which builds up lactic acid in the muscles, this can be painful. After Anaerobic Respiration you’ll have to repay the oxygen which you didn’t manage to get in your muscle in time by breathing hard for a while, because your lungs, heart, and blood couldn’t keep up with the demand of oxygen earlier on, sweat is produce to help cool the body down, the sweat evaporates on the skin cooling the body down.
Apparatus: We are going to use: a Cotton wool, an electronic weigh, and a Stopwatch.
Method: We are going to weigh the cotton wool before placing them under our arm pit and then reweigh it when it’s under our arm pit without vigorous exercise. Then we use a fresh cotton wool and do some exercises for 5 minutes then weigh our sweat production we’ll repeat this five times increasing the vigorous time every time. We are going to use a stopwatch to time our pulse, before exercise and then time it after five minutes of exercise, we’ll repeat this five times after the pulse return to normal. After the exercise we are going to draw it on a table to show the increase of sweat production compare to the pulse rate.
Variables: We are going to weigh the amount of sweat we produce after every exercise and we’ll increase the time of the exercise every time. We won’t change any clothes or the environment in the experiment.
Fair Test: We will make this investigating a fair test by repeating the same exercise, keeping the length of time and making sure we don’t have any extra weight or clothing and using the same mass of wool, wearing the same clothes and keeping it in the same environment.
Safety: We shall make this experiment safe by doing the exercise out in an open space to avoid any dangerous activities. People should avoid doing exercise next to an object or a person because you could accidentally push them or knock them over which is a hazard. It must be a precaution to not run next to a wet patch as you may slip and hurt yourself.
Glossary:
Lactic Acid – is used as fuel by the heart, but excessive lactic acid slows contraction in skeletal muscles and is though to cause muscle soreness if not flushed out of the body.
Homeostasis – Is the maintenance of a constant Internal Environment
CO2 - Carbon Dioxide
Anaerobic Respiration - Is what happens if there’s no oxygen available to supply to your muscle.
Skin – Is layers of dead cells to form a tough protective skin.
Vasodilatation – When blood capillary opens up to release body heat.
Vasoconstriction – When blood capillary closes off.
ATP – Adenosine Triphosphate
