use of caffeine has been related with raised blood pressure‚ restlessness‚ insomnia and anxiety which‚ in the long term‚ can lead to heart and circulation problems. The aim of this experiment is to observe whether caffeine has any significant effect on heart rate. To test this‚ daphnia will be placed in water and then caffeine solution‚ so the difference in heart rates can be compared. Daphnia are small invertebrates that are found in aquatic environments‚ more commonly known as ‘water fleas’. They
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Heart Rate Anticipatory Response: Anticipatory heart rate is the rate that the heart reaches before the start of exercise. Your heart rate usually picks up as a result of the anticipatory heart-rate response‚ this happens before exercise. When thinking about exercising before actually starting‚ the nerves that release the chemicals that adjust your heart rate increase the heart rate. The body expects exercise and therefore prepares for the activity‚ increasing the amount of oxygen being delivered
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Arrhythmias Arrhythmias are any change from the normal sequence of the electrical impulses in the heart. An arrhythmia is when your heart cannot pump blood effectively. It may happen to fast‚ to slowly‚ or it may happen erratically. When arrhythmias occur; the lungs‚ brain‚ and other organs cannot work properly and they may shut down and be damaged. A normal heart beat is strong‚ muscular pump that is a little larger than a fist and pumps blood continuously through the circulatory system. Arrhythmias
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chemicals on a Daphnia magna’s heart-rate compared to a control (pond water). The different chemicals were caffeine and alcohol. The heart-rate was the main variable in this experiment. The Daphnia’s heart-rate was observed for 15 seconds and then multiplied by 4 to show its heart-rate in one minute. This was repeated 4 times for each chemical. The data was averaged at the conclusion. It was discovered that alcohol acted as a depressant‚ it lowered the heart-rate of the Daphnia in comparison to
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Caffeine on the Heartbeat Rate in Daphnia Magnus  Erika Huizenga Ashley Kofahl The Effects of Alcohol and Caffeine on the Heartbeat Rate in Daphnia Magnus Abstract The projects purpose was to determine the effects of alcohol and caffeine on the heartbeat rate in Daphnia Magnus. Our hypothesis is alcohol causes a decrease in heart rate‚ whereas caffeine causes an accelerated heart rate‚ predicting that the more caffeine we give the daphnia the faster it heartbeat rate will become and the
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Observation on heart and breathing rate Name: Pranjal Patel Clan: 9G3 Group members: Introduction: Exercise is crucial in sustaining a healthy lifestyle. For instance‚ exercising on a daily basis can increase muscle and help manage weight. Also‚ exercise can lower cholesterol levels in blood and lower the risk of type 2 diabetes and some cancers. Moreover‚ while exercising the respiration rate increases because he/she has to expel the carbon dioxide
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Darra Boyer November 18‚ 2015 Affects of Various Drugs on the Heart Rate of Daphnia magna Introduction The Daphnia magna‚ more commonly known as water flea‚ is indigenous to ponds and lakes in northern and western North America. This crustacean has an outer transparent covering called the carapace. The unique physiology of the water flea is useful in translational research allowing researchers to visibly study all of the bodily systems without causing harm to the specimen (2). Being classified
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work goes on for a period of time and eventually leads to a certain degree of fatigue. Our concern is not so much with these move-ments as with the work demands of these movements on the player. We want to know how the work affects his body: his heart and lungs‚ muscles‚ blood‚ joints and all the other components of the machine that he is when he performs work. Our main concern is to examine the effect of work on the machine and to devise the means to make that machine more efficient. The greater
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The effects of caffeine on the heart rates of Daphnia. Introduction In the water flea‚ Daphnia‚ the single‚ small heart is easily visible when viewed under a low power microscope. The heart rate can be monitored and measured in different conditions‚ such as change in water temperature‚ or in this case‚ the concentration of chemicals added to the water they habitat. A change in daphnia heart rate under the influence of a concentration of caffeine solution creates a procedure providing an interesting
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Pacemaker The human heart is an essential organ of the human body. Its sole purpose is to supply the body with oxygen by pumping blood through a complex system of veins and arteries. However‚ it is often common for the human heart to suffer from various heart conditions‚ such as a heart block‚ slow heart beat‚ heart attack or heart failure. Such heart conditions can lead to weakness‚ fainting‚ shortness of breath‚ or even possibly death. These can usually be treated with medication but in cases
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