According to the experiment‚ the average normal heart rate of Daphnia is 20 heart beats per 12.94 seconds. There were six total trials done for Normal Heart Rate with 2 Daphnia (3 Trials each). The aim of this experiment was to measure the effect of neurotransmitters on the heart rate of Daphnia. When the adrenaline was added to the liquid around Daphnia and after a few seconds‚ its heart rate sped up. For example‚ during the first trial‚ the heart rate went from 20 H.B. per 12.54 seconds (For Normal)
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to observe the effects of energy drinks on heart rate and if there is an increase in overall heart rate due to increase consumption. Twenty-three males participated in the study as well as ten males attending GCU. Prior to completing the physical test‚ participants were arbitrarily assigned to receive a placebo or energy drink. In addition‚ a Polar heart rate monitor was attached to the individuals prior to the physical tests and collected the heart rate every minute. There is no sufficient data that
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Measurement of Heart Rate for Autonomic Nervous System Abstract: The Autonomic Nervous System lab was designed to measure reaction times by using a variety of tests that affect the heart rate. These tests were the startle‚ stroop‚ Valsalva maneuver‚ diving reflex‚ and a test of our choice. The test our group chose to measure the heart rate in response to doing a trust fall to anticipate the stress right before the fall. To begin this lab we chose a participant‚ and then hooked their finger
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- 2006 RESULTS: In this experiment the effect of different hormones on heart rate of _Daphnia_ was examined. It was investigated which substances act as stimulants and which substances act as depressant. Initially‚ _Daphnia_ was placed on depression slide under the microscope and the average heart rate was determined. Subsequently‚ _Daphnia_ was treated with different type of hormone and the effect on Daphnia heart rate was observed. It was investigated which substances act as stimulants and which
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Temperature and Epinephrine on The Heart Rate of Daphnia Leslie Orzetti-Gollhofer Gaby Macias INTRODUCTION The Daphnia is a Crustacean other known as the water flea. It lives in small bodies of freshwater. The Daphnia is ectothermic‚ meaning it controls its body temperature through external means. With this experiment we experienced first hand what the effect temperature has on a Daphnia’s heart rate. We also experimented what effect epinephrine has on a Daphnia’s heart rate. HYPOTHESIS If we add hot
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Description To investigate the effect on caffeine on heart rate of water fleas and to understand the risk of high level consumption of caffeine to the health of the human circulatory system and nervous system. Preview Diagram 1: Chemical structure of caffeine Image source: http://ismaastricht.wikispaces.com/file/list The images above show the chemical structure of caffeine which has a chemical formula of C8H10N4O2. Caffeine was named by the International Union of Pure and Applied Chemistry
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LAB REPORT FORMAT Title: Provide a title that is a description of your lab followed by a lab number. The title should clearly identify the experiment’s variables (independent & dependent) Purpose/Problem: This is the place to explain what you are trying to find out or what you are going to do in the lab. Include information about the variables involved. Hypothesis: “If………then………because………” This is a cause/effect statement. This is a prediction of what the expected outcome of
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one’s heart rate. It was found that the exercise that was performed did affect the heart rate. Therefore‚ doing push ups did increase the heart rate. If doing exercise increases one’s heart rate‚ then doing push ups affects the heart rate. This investigation deals with analyzing the effect on doing an exercise‚ in this case- pushups; will increase one’s heart rate. I have analyzed ten boys between the ages of fifteen and seventeen years old. The task was to do pushups in one minute. The heart rate
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1) Make a graph of resting heart rates from Activity 1. Provide a physiological explanation for fluctuations in resting heart rate over time. Discuss a couple of extrinsic factors that influence the autonomic nervous regulation of resting heart rate. The resting heart rate fluctuates over time because it is under control of the autonomic nervous system and the fluctuations are a result of the sympathetic and parasympathetic systems trying to balance each other out. There are many reasons
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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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