Daphnia Case Study

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 heartbeat rate will decrease as we give the Daphnia alcohol. After doing the experiment we found that the more caffeine we added to the Daphnia Magna the faster its heartbeat rate became. We also found that

The task is designed to assess the impact of stress on the Daphnia’s circulatory system. In this task, an analysis of the effect of fertilizer on Daphnia will be undertaken. A stress or a stimulant will be chosen to see what happens to a daphnia. The stress my group has chosen is the effect of fertilizer on a daphnia’s heart rate.

This experiment was done to test whether or not the drugs Nicotine, Alcohol, Pain Killers, Nyquil, and Caffeine were stimulants (increase in the body’s metabolism and consequently increase the heart rate) or depressants (slow the rate of metabolism and consequently slow the heart rate) of the homeostasis (the ability of one’s body to maintain a constant internal environment) of Daphnia.

Immersing Daphnia in the ethanol indicated an increase in the heart rate. This relates to the fact that alcohol can have a big impact in the live of humans. Since the cross sectional part of the heart relates to that of humans. The increase in the heart rate enabled me to understand more about the how the increase in the heart rate when ethanol (Alcohol) is present in the body it can affect one's blood pressure [1]. In contrast, high blood pressure is somewhat indicates how one’s heart is beating really fast. This means that at as the heart is pumping blood through the vein and arteries in the body. The force the heart is using to pump the blood through the artery walls can cause a tear or damage of the arteries which can lead to death. Furthermore,

Daphyne, the changes you pointed out in your post were areas that needed to be specifically addressed. This is because the last time proposals to shape improvements were addressed was in 1991. There are approximately 1.5 million residents in over 15,000 long term care (LTC) facilities across the United States. This represents a large number of the elderly populations and the strict monitoring of their care is vital to decrease preventable hospital readmissions and uncalled-for infections, raise the quality of care, and reinforce safety procedures for the residents of LTC facilities. The U.S. Department of Health and Human Services (HHS) Secretary, Sylvia M. Burwell stated, “this proposal is just one part of the administration’s overall commitment

Other short term effects include faster heart rate and breathing, increased blood pressure, dilated pupils, dry mouth, perspiration, and a feeling of superiority. More severe side effects include aggression and hostility, or even strange, incessant behavior. Flushing, tremors, and hallucinations are common of overdose. The effects of methylphenidate are often likened to those of cocaine and studies have shown similarities in the two. Both drugs have the ability to block dopamine transporters. The reuptake of catecholamines noradrenaline and dopamine are blocked, leaving them in the synapse in increased concentrations, promoting the elevation of mood and the feelings of alertness, well-being, verboseness, or superiority (1). In addition, a study using baboons showed that the regions of distribution of methylphenidate and cocaine in the brain are similar, and there is competition for binding sites between the two on the post-synaptic terminal (1).

Monitoring mice in different controlled activity settings for one to two hour periods assessed locomotor activity. Some mice were injected with methylphenidate and SKF82958 following a thirty minute habituation period, then monitored for an additional sixty minutes of activity. Other mice had their dopamine levels depleted to less than 5% of the control

This reversal process is responsible for the return of a neurotransmitter to the synaptic cleft, which would otherwise be metabolised. This increases the chemical messages found at receptors. The psychostimulant action of methamphetamine occurs through its ability to reverse the dopamine transporter. This action can increase locomotor activity in its users (Swanson, Heath, Stratford, & Kelley, 1997). Based on this, it would be expected that a dopamine receptor antagonist would reduce the motor effect of methamphetamine administration. The aim of this report is to identify if the administration of methamphetamine and it’s stimulant effect play a role in locomotor activity, the possible increase of motor behaviour, and whether or not this effect occurs

Also tested was the daphnia’s response to chemical changes in their environment. Diphenhydramine is the active ingredient in the common allergy medication Benadryl. In humans, this drug is often used to treat allergy symptoms including itching and hives as well as common cold symptoms like runny nose and excess mucus. Its main action is to block the receptors that the histamine usually bind to and thus inhibiting the action of histamines. I expected diphenhydramine to increase the heart rate because one of the common side effects in humans is increased blood pressure and heightened heart rate. I was also prepared for a decrease in heart rate because diphenhydramine is also know to cause drowsiness (it is also an active ingredient in many common sleep aids) which could indicate that it will the daphnia’s lower heart rate

Ms. Jones is in an extremely critical situation, due to her development of cardiogenic shock and her current need for multiple catecholamines. Cardiogenic shock is the end result of substantial cardiovascular injury with myocardial infarction and emergent revascularization being at the top of the list (Levy et. al, 2015). Patients that experience cardiogenic shock need extensive care and monitoring which has landed her a place on the critical care unit. Dopamine has predominantly beta-adrenergic effects at lower doses and alpha-adrenergic effects at higher doses, but its effects are relatively weak (Vincent & Backer, 2013). If the dopamine and dobutamine used reach their therapeutic maximums, the physician may consider adding other Alpha and

To measure the influence of methamphetamine (METH) administration on behaviour and relation of dopamine receptors in locomotor activity, a total number of 24 Sprague-Dawley rats were used in the study (n=12 per experiment). Experiment 1, injected METH and vehicle for six rats, Experiment 2 injected either vehicle or SCH23390 before injecting METH. Both tests measured locomotor activity in the chamber and following the day of experimentation groups, switched injection in each experiment. There was a considerable increase in locomotor activity of METH treatment in the first experiment. Pretreatment with SCH23390 significantly reduced locomotor activity produced by METH administration compared to vehicle. This data provides the undeniable evidence that METH administration caused behavioural changes and activated through dopamine receptors

Humans commonly underestimate how much energy drinks can affect their heart rate and heart functions. These different energy drinks can cause a variety of number in damage. Scientists have found that are a couple different reasons for any of their organs or bodies functions to be near their heart failure, liver and kidney diseases. Scientists have tested what happens to a human’s heart rate when exposed to anywhere from nicotine, oil and even \caffeine. First of all their one function that can be affected from this is their body’s function on clearing their carbon dioxide with oxygen or heart failure from over exposure to complex drinks that (can contain too much sodium or increase the heart rate then overwork the human’s heart). Another example would contain the sodium in products and how it lead to addiction and not only addiction and obsession, but heart failure. These toxins are commonly poured out in lakes, ponds and water resources. Animals can be affected from these conditions, causing fatality to their kind. There is only a certain number of specific animals even before the food chain. An organism that is a significant part of the food chain is a type of crustacean found in common water resources are Daphnia, there are three different species of them. The most visual kind would be Daphnia Magna, a small planktonic in the scientific group,Phyllopoda. The significant part of Daphnia are their circulation systems; they are part

The Dopamine Hypothesis theorizes that the symptoms portrayed in Schizophrenia is can be explained by abnormal function of dopamine in the brain. There have been three versions of the Dopamine Hypothesis. The first version of the hypothesis focuses on the dopamine receptors. Antipsychotic drugs that impact the metabolization and reabsorption of dopamine where found to be effective in treating the symptoms. It was theorized that if the symptoms of a Schizophrenic episode can be treated by the use of dopamine

production of dopamine causes the body to slow down, as well as the thought process. The muscles

Abstract In the laboratory, students were to learn the effect of multiple drugs on a frog’s heart rate. The drugs what were used were acetylcholine, epinephrine, pilocarpine, and atropine and acetylcholine. The drugs were applied to the frog’s heart and observations were made on how the drugs affected the frog’s heart rate. The acetylcholine and pilocarpine cause the heart rate to slow down.