Effect of Caffeine on Heart Rate of Daphnia
Problem Statement
How the Effect of Various Coffee Bean Roasts on the Heart Rate and Longevity of Daphnia Magna.
Background Information on Coffee
Caffeine is a compound found in mostly tea leaves, coffee beans, soft drinks, and some prescriptions. caffeine has a bitter taste to it. It is a white crystalline xanthine alkaloid. It’s from a family called heterocyclic compounds, and it is from a member of methylxanthines. Xanthines are purine that are found in most human tissues, fluids, and other organisms. Heterocyclic compounds are atoms in molecules joined in rings containing one atom of an element other than carbon. These two compounds form caffeine. caffeine is used in the world for many
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For example, It’s said that dark coffee has higher caffeine level and is stronger than light coffee. Most say dark coffee has more caffeine, but it’s not true. Most think that dark coffee has a bitter and strong taste to it and, therefore, it has more caffeine. In reality darker roasts have less caffeine than lighter roasts. When dark roasts is being roasted, some caffeine is lost during that process, and that makes dark roast coffee to have less caffeine. Medium roast is in the middle of dark and light roast. It has the regular amount of caffeine in it compared to dark and light roasts. Another misconception people have is that Light roasts has less caffeine than dark roast. The word “light” makes most think it has less bitter taste and lighter color, therefore it has less caffeine. That’s not true, lighter roast has more caffeine than the medium and dark …show more content…
The cardiovascular is one of the most important organs in the human body. Without a heart no human would be living, breathing, or doing anything else. The heart works as a pump, pumping blood through tissues, cells, and organs. This blood carries oxygen and nutrients to the cells, and it removes the carbon dioxide. The heart is one lightweight organ and it has a small size. It weighs between 200 to 425 grams and the size of it is nearly as big as a fist. At the end of a long life the heart had beat more than 3.5 billion times. With that being said, the average heart beats 100,000 times a day, which is 60 to 100 beats per minute and it can go faster is necessary. The heart can pump, about 2,000 gallons of blood through the entire body. The human heart consists of four chambers: two upper chambers which are the atria and two lower ones which are the ventricles. The right atrium and right ventricle make up the right side of the heart, while the left atrium and left ventricle make up the left heart. A muscle called the septum, which is a wall that separates the two sides of the
The purpose of this study is to determine the effect of varying concentration of alcohol, caffeine and nicotine on the heart rate of a daphnia magna and confirm any similarities between the affect of the chemical compound on the heart rate of daphnia magna and human beings.
The heart is an extraordinary structure that is the base of all human life. However, it similar to the uncomplicated functions of water pumps. As the heart beats, blood is distributed throughout the body using a network of blood vessels. The functions of the heart can be kept in regular and healthy conditions through exercise. Exercise has an effect on the blood that is circulating through the body. That circulating blood makes the heart desire more oxygen, causing the heart rate to increase rapidly to keep up with activity demand.
the heart is made of a muscle called the cardiac muscle unlike other muscles in the body the cardiac muscle never gets tiered its constantly working and never stops. It squeezes blood out of the heart and then relaxes it to fill it back with blood again in and this process continues and happens everyday until you are dead. The heart beats non stop this is achieved because of the cardiac Muscle.
Caffeine is a mild stimulant that occurs naturally in at least 63 plant species. Caffeine can be found in the leaves, stems, seeds, and roots of these various plants. Caffeine is part of the methylxanthine family. It consists of a xanthine molecule with three methyl groups attached to it. Caffeine can be found in many products like sodas, tea, and coffee, but it also occurs in several other products such as prescription medications, diuretics, and pain relievers. Caffeine’s widespread use and popularity have caused many people to view the substance as an addictive drug. Thus making caffeine the most inexpensive and readily available drug known to man. Then on the other hand there are people who view caffeine as a helpful stimulant that increases the individual’s concentration and awareness as well as many other physical traits. The important thing to remember is that caffeine’s affects vary based on the person, the amount ingested, the frequency of consumption, and individual metabolism. (http://www.pp.okstate.edu/ehs/kopykit/caffeine.html)
Caffeine and coffee are a daily part of life for most people in modern society. The discovery of the coffee bean is said to have been in Ethiopia, when a sleepy eyed goat herder noticed his goats eating red berries, he then noticed the effect it had on them as they jumped and danced around him. He then tasted the berries and his eyes opened wide, he took them to the local village who also liked it and in particular the monks who used the berries to keep them awake during meditation.
You need your heart for all your body needs. It pumps about 2000 gallons of blood a day. It takes about 20 seconds for blood to reach
Although coffee may be beneficial some ways, its side affects cannot be ignored. Consuming coffee immensely causes the stress hormone to release chemicals that tend to increase blood pressure, body's heart rate and tension levels. Coffee's mostly known for providing energy, but for many, the rush of adrenaline turns into feelings of "jittery tension" causing difficulty to relax. Another side effect that avid coffee drinkers face is lack of minerals in their body and diet. Coffee tends to affect the process of iron absorption in the stomach and most importantly in the kidneys; retaining important mineral such as magnesium, zinc, calcium and many others. Indulging coffee can also cause heartburn and acid reflex. Coffee causes a little muscle called the lower esophageal sphincter to relax. Once that muscle is relaxed, it is no longer tightly closed causing stomach contents to go back in the esophagus causing a burning feeling. (Dillan, 2013)
The heart serves as a powerful function in the human body through two main jobs. It pumps oxygen-rich blood throughout the body and “blood vessels called coronary arteries that carry oxygenated blood straight into the heart muscle” (Katzenstein and Pinã, 2). There are four chambers and valves inside the heart that “help regulate the flow of blood as it travels through the heart’s chambers and out to the lungs and body” (Katzenstein Pinã, 2). Within the heart there is the upper chamber known as the atrium (atria) and the lower chamber known as the ventricles. “The atrium receive blood from the lu...
In general, people usually wonder whether the consumption of caffeine is beneficial or harmful to their health. There some benefits and risk of consuming caffeine but based on the different studies that have been conducted over the years, more importance are given to benefits of caffeine (Hensrud, 2014). According to Gunnars (2013), caffeine is good for health as it contains antioxidants and beneficial nutrients which may improve human health. Plus, Gunnars (2013) also stated that studies show that coffee drinkers have a much lower risk of several serious diseases and have proven to have some health benefits. First and foremost, caffeine help people feel less tired, increases memory and increases energy levels. This is because, when caffeine is consumed, it is absorbed into the bloodstream which then travels to the brain and caffeine blocks an inhibitory neurotransmitter in the brain. Then, the amount of other neurotransmitter such as dopamine and noradrenaline increases which leads to enhanced firing of neurons. Therefore, this improves various aspect of brain function such as memory, mood, reaction time, alertness and energy levels (Gunnars, 2013).
The heart is two sided and has four chambers and is mostly made up of muscle. The heart’s muscles are different from other muscles in the body because the heart’s muscles cannot become tired, so the muscle is always expanding and contacting. The heart usually beats between 60 and 100 beats per minute. In the right side of the heart, there is low pressure and its job is to send red blood cells. Blood enters the right heart through a chamber which is called right atrium. The right atrium is another word for entry room. Since the atrium is located above the right ventricle, a mixture of gravity and a squeeze pushes tricuspid valve into the right ventricle. The tricuspid is made up of three things that allow blood to travel from top to bottom in the heart but closes to prevent the blood from backing up in the right atrium.
It is about the size of a person's fist. The heart has four chambers. The upper two chambers are the right artium and left atrium, and the lower two are the right ventricle and left ventricle. Blood is pumped through the chambers, aided by four heart valves. The valves open and close to let the blood flow in only one direction.
As humans we need the heart to pump blood all around the body in order
Caffeine is a stimulant that has not been given the attention that some says it deserves. Caffeine is found in many everyday substances. It can be found in coffee, tea or sodas. Caffeine can be found on almost every street corner. There is a coffee place in just about every town. Sodas and coffee are found...
Many people consume coffee at any time of the day all around the world. They come in many different forms, that could either be a benefit or a risk to a person’s health. How is it that coffee could hinder how people live? “Effects of caffeine and coffee consumption on cardiovascular disease and risk factors” by Anna Victoria Mattioli, takes on a perspective of cardiology. Mattioli speaks about how coffee can speed up the effects of heart disease. On the other hand, “To sip or not to sip: the potential health risks and benefits of coffee drinking” by Sarah R. Taylor and Barbara Demmig-Adams; take an anthropology and evolutionary biology & ecology approach.
Sereshti, H. & Samadi, S. (2014). A rapid and simple determination of caffeine in teas, coffees and eight beverages. Food Chemistry, 158, 8-13.