Exercise 3 Neurophysiology of Nerve Impulses Worksheet Essay Example

Exercise 3: Neurophysiology of Nerve Impulses Worksheet Essay Exercise 3: Neurophysiology of Nerve Impulses Worksheet Assignment Due: Week 4 Eliciting a Nerve Impulse Activity 1: Electrical Stimulation 1. Do you see any kind of response on the oscilloscope screen? No 2. What was the threshold voltage, or the voltage at which you first saw an action potential? The threshold voltage is at 3. 0 V. 3. How does this tracing compare to the one that was generated at the threshold voltage? There was a slight increase. 4. What reason can you give for the change? The increase in voltage. 5.Record this maximal voltage here: The maximal voltage is 4. 0 V. Activity 2: Mechanical Stimulation 1. When the glass rod is touching the nerve, what do you see on the oscilloscope screen? A spike on the screen. 2. How does this tracing compare with the other tracings you have generated? The tracing is identical to the tracing generated at the threshold voltage. Activity 3: Thermal Stimulation 1. What happens when the heated rod touches the nerve? It stimulates the ner ve. 2. How does this trace compare to the trace that was generated with the unheated glass bar?It’s similar to a 3. 5 v stimulation. 3. What explanation can you provide for this? Heat stimulates nerves. Activity 4: Chemical Stimulation 1. Does the sodium chloride generate an action potential? Yes 2. Does this tracing differ from the original threshold stimulus tracing? If so, how? No 3. Does the hydrochloric acid generate an action potential? Yes 4. Does this tracing differ from the original threshold stimulus tracing? If so, how? No 5. To summarize your experimental results, what kinds of stimuli can elicit an action potential?Thermal, glass, cold, hydrochloric acid and sodium chloride. Inhibiting a Nerve Impulse Activity 5: Testing the Effects of Ether 1. What sort of trace do you see? Flat line 2. What has happened to the nerve? The ether blocked the nerve transmissions. 3. How long does it take for the nerve to return to normal? 6 minutes Activity 6: Testing the Effects o f Curare 1. Does this generate an action potential? There is no change to the action potential tracing. 2. What explains this effect? Nerve propagation is unaffected because curare works on the synaptic ends of the nerve. . What do you think would be the overall effect of Curare on the organism? Curare would ultimately kill the organism by blocking nerve transmission. Activity 7: Testing the Effects of Lidocaine 1. Does this generate a trace? No 2. What sort of tracing is seen at the threshold voltage? At threshold voltage, the screen still displays a flat line. 3. Why does Lidocaine have this effect on nerve fiber transmission? Lidocaine is a sodium ion channel antagonist which will block sodium channels from opening, thus inhibiting any action potential from being generated.Nerve Conduction Velocity Activity 8: Measuring Nerve Conduction Velocity 1. Which nerve in the group has the slowest conduction velocity? Earthworm 2. What was the speed of the nerve? 8. 85 m/sec 3. Which nerv e of the four has the fastest conduction velocity? Rat Nerve 2 4. What was the speed of the nerve? 46. 74 m/sec 5. What is the relationship between nerve size and conduction velocity? What are the physiological reasons for this relationship? The larger the nerve, the faster the conduction velocity. Conduction velocity is faster if the nerve is myelinated than if it not. . Based on the results, what is your conclusion regarding the effects of myelination on conduction velocity? What are the physiological reasons for your conclusion? In myelinated nerves, conduction velocity is faster as the action potential jumps from node of Ranvier (internode) to node of Ranvier and does not travel along the cell membrane. 7. What are the evolutionary advantages achieved by the myelination of neurons? Attack and escape. Myelinated neurons allow faster reflexes increasing chance of survival, which allows you to pass your genes on to your offspring.

12 Useful Apps for Administrative Assistants

12 Useful Apps for Administrative Assistants If you’re not a personal assistant- or even if you are- you could probably use one for yourself. It’s hard enough to function at your job and in your life without also struggling to keep your resolutions to be super organized this year. But what if you could have help?Did you know you can get a virtual assistant of your very own? Straight to your phone. They’re called SVPAs. You’ll still have to run your own errands, but you can get a little help with the other stuff- and you can yell at this assistant all you want.Here are some of the best.1. Google NowCalled â€Å"the intelligent personal assistant,† Google Now   is available for iOS, Android, and your desktop. It stays with you around the clock and organizes everything into customizable cards- weather, traffic, sports scores, favorite websites, etc. You’ll never see your life the same way again once you see it in all these neat packages.2. 24MeThis one functions kind of like a second bra in. Set yourself reminders for paying bills or other important deadlines and meetings. Sync all your to-do lists, notes, and calendar into one convenient app. It’s free, and currently one of the top 10 productivity apps on the App store.3. QuipThe best endorsement for this one might be that Mark Zuckerberg himself uses it. It’s just like the virtual office Facebook, Quora, and Instagram use, and allows users to collaborate, create, upload, and share documents- even edit them- as a team.4. WunderlistIf you’re a list person, this app is right up your alley. Make all the lists you want, then lump them all together in one sleek package and enjoy. You can even share your lists with family members or pals when you need to plan vacation packing lists or bucket lists.5. SpeaktoitIf you’d rather speak to your SVPA, like you do to Siri, then this app is for you. Speaktoit is like Siri, only its the the CEO version. You can make calls, search the internet for puppy photos, or find the closest dry cleaners. Just give it commands, and the app will remember your preferences for you. It can even answer questions about how best to sort your day.6. HootsuiteThis one is free, too, with paid subscription options available. It’s a desktop/phone tool that helps you update all of your social media platforms from one place. One app, multiple posts. You can even tailor which posts go to which media as you prefer.7. EvernoteAlso free! This app ends up on most people’s favorites lists. Capture, manage, store, and remember everything you need to. Evernote is also good search and sync capabilities.8. Call PleaseHBO producer Gregg Feinberg created this free app to be able to streamline the call log process, making one list for all team members. Never let any calls slip between the cracks again. And your manager will always know exactly what’s going on- and what calls they most urgently need to make.9. IFTTTâ€Å"If This Then That† le ts you make customized recipes based on what you have- and better yet, keeps them simple. Never be stuck without an idea of what to make for dinner again with this free app.10. TinyScanScan any document at any time anywhere and send it to your own email as a PDF. Youll never have to go to Staples again for your document management.11. DropboxOften undersung, this cloud storage program syncs between your computer and your phone. Your documents are securely backed up and accessible no matter where you are. Never be at a loss again in an off-site meeting when asked the location of a specific document.12. LogMeInThis app lets you have full access to your work computer- remotely. Open documents, launch applications basically, do anything you need to do.

Improve Business Writing Skills by Measuring What Matters

Improve Business Writing Skills by Measuring What Matters Business leaders understand the importance of "good business writing" skills and can differentiate good writing from bad. However, in order to improve your team's business writing skills, it's essential to actually measure business writing skills to develop metrics to track improvement. Defining the right measurements allows you to assess the current business writing performance level of your team and helpsimprove business writing skills accordingly. Here are three steps measure your employees’ business writing skills 1. Separate Substance and Syntax Measurement The first step is to measure the substance and syntax of the document separately. These are two distinct aspects of a document that are unique to business writing. The document can have good substance that is poorly worded. Conversely, a poorly worded document can lack substance. Always remember that in business writing, substance precedes syntax. A document that has perfect syntax but meaningless substance is still going to fail to convey information. More worrisome, it may lead readers in the wrong direction, wasting time and potentially introducing risk and cost implications. 2. Analyze Substance of a Typical Document Once you are able to differentiate between substance and syntax, the next step to improve business writing skills of your employees is to specifically analyze the substance of your documents. There are five crucial elements to substance that differentiate good business writing from bad. These include: Awareness of audience Correct content for audience needs Logically categorizing that content Sequencing the content logically And, of course, good style, tone, and grammar. Once you break down the substance according to these 5 elements, it becomes easier to assess the document and the skills of the writer. Using this baseline, you can identify writing gaps and deficiencies, thus informing business writing training emphasis. 3. Analyze Syntax Syntax is the last measurement step in analyzing the team's writing skills. Syntax is actually easier to measure and correct than substance errors. Employees who possess strong analytical skills – who often work in engineering, scientific, and finance positions–are naturally adept at integrating multiple concepts. This typically translates into strong substance. However, not all employees with analytical skills will also have clear syntax skills. But, it's easier for those employees with stronger analytical skills to quickly and easily improve business writing skills because they possess the raw requisite skills. The concept of measurement is just as important in writing as in any other field. Using these steps, you can access the performance levels of your employees' business writing skills. However, do know that measurement alone is not enough. Measurement is just the start to better writing. Once you identify the gaps, you can then start the improvement process. Download my eBook, â€Å"Four Steps to Improve Your Team’s Business Writing Skills"to learn more about helping your employees write better at work. Or, schedule a complimentary consultationwith a business writing expert to receive specific recommendations for your team.

Case study 4-2 Virtually There Example | Topics and Well Written Essays - 500 words

4-2 Virtually There - Case Study Example Therefore the patients are able to draw on the knowledge of a lot of doctors. These doctors positioned in other locations can be acquainted with modern treatments or can have a new look on the treatment alternatives. The scenario outlines a real-time corporate shared data network. In this scenario, some of the other communication technology based facilities can comprise electronic repositories, electronic collaboration systems and video teleconferencing. In this answer I will present the possible ideas and suggestions which can be adopted by Dr. Esserman in order to successfully manage this virtual team. In order to successfully manage such team we need to take care of some the issues and areas, which are: (Turban, Leidner, McLean, & Wetherbe, 2005; Laudon & Laudon, 1999) Privacy/security: How will the privacy of patient’s data and information records are maintained? In a world which is more and more concerned with privacy, the privacy of patient records have to be addressed. Liability: Recognizing the extensive issues for medical malpractice, who will take the responsibility for problem cases? The students can react to physician who provides help as the preliminary point of contact; however it cannot be probable to consequently carefully restrict liability. Compensation: How will the project team associates be rewarded for their participation? For the team to effort over a long term, a number of systems will require to be planed to recompense the physicians for their time. As the quality of their contribution will carry on being significant for these virtual teams, there requires being a number of drivers for the physicians’ participation. Communication: How will the important data and information are communicated to the patient? Who will be accountable for up-holding the communication technology? Students can be worried about how the responsive information has to be

Film Analysis Paper Research Example | Topics and Well Written Essays - 1250 words

Film Analysis - Research Paper Example Mario Puzo’s book was optioned from the first fifty pages written in a unilateral decision by the head of Paramount Studios. Many studio executives and technicians distanced themselves from the idea of making this film because the Kirk Douglas film â€Å"The Brotherhood† had failed so badly in 1970. Coppola saw that flop as an indicator that films based on Italian-Americans should not be cast with non Italian-Americans. â€Å"I liked the idea of starting the movie†¦with, ‘I believe in America,’ because it’s what the whole movie is about,† reflected Francis Ford Coppola. â€Å"It’s saying that our country should be our family in a way, that it should afford us the protection and the honour that, in a strange way, this Mafia family does.† (Hogg) So, Coppola set out to write a movie about a traditional Italian-American family, an organized crime family and the American family; all of these families with common tradition and his tory and, most importantly, the American dream as foundations. Production History Paramount sought Coppola to direct The Godfather based on his Italian heritage. The studio felt the product could be more realistic if someone from those traditions led the project. Considering Coppola was broke and in the process of being evicted, it surprised everyone when he turned down the project because he did not like the novel. (Hogg) George Lucas intervened and Coppola found something he liked: the idea of the metaphoric connection among social, business and national family identity and process. Michael was America. For studio purposes, Coppola needed to insert some gangster film symbols (Manchel 2003), but the theme is family. The first production battle involved setting. The original script was set in the 1960s and 1970s, with hippies. (Hogg) The story was based on 1945-1955 events within the crime family. Coppola fought for and won the additional budget for a period film instead of saving m oney with a contemporary setting. The production budget was quickly increasing from $2 million to $6.8 million. One reason the studio requested Coppola was the director’s thrift in production. The Coppola vision for The Godfather, however, was not inexpensive. Casting proved to be the next production obstacle. Coppola believed other films failed at the box office because moviegoers did not believe Kirk Douglas as an Italian crime boss. Coppola wanted Italian heritage actors. The studio wanted Robert Redford to play Michael. (Hogg) Finally, the studio assigned a crew to film The Godfather. Coppola fired almost everyone because of the corrupt, undermining studio politics among the disorganized and poor teamwork oriented studio employees. The studio thought Coppola would do as instructed since he, superficially, needed the money. The studio was incorrect, but ultimately rewarded for their difficulties with an $86 million gross in the first two months (1972 dollars). Coppola esta blished himself as the auteur director that he dreamed of becoming; however, this dream reduced his capacity to be a writer-director as he originally wanted. (Hogg) Artistic Importance â€Å"Coppola’s The Godfather, Part One is distinguished among other things by the number of scales or levels upon which it operates. In its combination of epic structure and highly individuated family melodrama, it is perhaps the American Film which most closely approximates the nineteenth-century

Feminist Refutation of the Deconstruction of The True Confessions of Ch

A Feminist Refutation of the Deconstruction of The True Confessions of Charlotte Doyle  Ã‚   As Captain Jaggery’s ostensibly moral imperative from Avi’s The True Confessions of Charlotte Doyle implores, we the readers â€Å"protect the natural order of the world† through our disbelief in our heroine as reflected in our intuitive reflection upon and deconstructionalist critique of the book.  Ã‚  Ã‚   In fact, it is likely that our disbelief of Charlotte’s story is as much a comment on our attitudes towards gender roles as it is an educated and thoughtful response to its clues.   Even as we find ourselves believing along with the story, we, upon reflection, find valid ways to destroy that believability, in no small part because we define what she does as either â€Å"female† (believable) and â€Å"male† (not believable). The preceding was provided so that the student could gain an understanding of the paper. The complete paper begins below: So what we have here is a girl who admits she owns the weapon that murdered Mr. Hollybrass.   A girl who lied about where she got it.   A girl who was taught to use a blade, and learned to use it, as Mr. Grimes would have it, ‘uncommon’ well.   A girl who, all agree, is unnatural in every way she acts.   Gentlemen, do we not, as natural men, need to take heed?   Is it not our duty, our obligation, to protect the natural order of the world? (Avi, 178) As Captain Jaggery’s ostensibly moral imperative from Avi’s The True Confessions of Charlotte Doyle implores, we the readers â€Å"protect the natural order of the world† through our disbelief in our heroine as reflected in our intuitive reflection upon and deconstructionalist critique of the book.  Ã‚  Ã‚   In fact, it is likely that our disbelief of Charlotte’s story is a... ...ive to males.   This in itself indicates a gender expectation on the part of the reader, one that predisposes the reader to disbelieve and should lead us all to re-examine our motivations in deconstructing the text.  Ã‚   Moreover, females and males alike colored Charlotte’s adaptation to her circumstances with a movement from a female role to a male role as if gender roles were intractable and binding from both the male and female points of view -- she wouldn’t be able to do it, despite the fact that quite possibly her own survival dictated she probably could have not done otherwise!   Once again, logic dictates that we at least acknowledge that our inability to accept Charlotte’s account could be more of a reflection of our gender expectations than her twisting of the truth.    Works Cited: Avi. The True Confessions of Charlotte Doyle. New York: Avon Books.1990.

Where Is the Diversity in America Today

The dream of a diverse America has to be one of the most fundamental philosophies on which our country has been built. From the first group of pilgrims that landed at Plymouth Rock, to the thousands that immigrate to America every year, they all still believe in the same dream that the pilgrims had when they came to America. The Dream that no matter what their racial, religious, or social background and beliefs are they can find wealth and happiness in America. This philosophy was so important that our Founding Fathers had to mention it in the Constitution. Yet nearly two and half centuries later where is that diversity in America today? It seems that even with the population of America at over 300 million today we are still like the first groups of Pilgrims, content to stay within our own little groups. As a conscious America we talk a good game, however when we go home at night our subconscious takes over, and we retreat into that comfort zone within our group. American’s should admit that they really don’t care about anyone else except themselves. They should stop pretending that they do, unless they can actually live by the example that our conscious mind has us profess. According to the 2000 Census report the composite of races in America today are basically 75% White, 12. 3% Black, 12. 5% Hispanic or Latino, with Native Americans and other races making up the rest of our population. One can see from these numbers that it would be very easy to segregate into racial groups and to live within one group. The Columbia Encyclopedia’s unsigned essay on race which happens to be titled Race points out how we classify groups strictly by our physical characteristics and even argues that the term race is an inappropriate term; Race says that many physical anthropologists believe: â€Å"The term race is inappropriate when applied to national, religious, geographic, linguistic or ethnic groups, nor can the biological criteria of race be equated with any mental characteristics such as intelligence, personality, or character. (263). Still those social distinctions like living with your own race, having all your friends of the same race and background, and even maybe those who are only in the same tax bracket or educational level prevail in our society today, and is not only natural for people to gravitate towards a comfort zone that they find within themselves and their environment? The answer would have to be yes, this means certain social distinctions do in fact matter. There is Religion in America today, which may not be viewed as one of those important factors of our social make-up as it once was, but when we take a look at the population numbers which profess that Christians and of other religious beliefs are in the majority that make up Americans today; we do have to admit it does play an important role. Probably not as much as in Europe or in some other countries, but Religion is an important factor none the less. According to the U. S. Census Bureau we have an adult population of: approximately 207 million, approximately 159 million are Christians, approximately 8 million in other religions, and approximately 29 million who believe in something other than a specified religion. With this data we can see that the majority of America’s social make-up is indeed Christian. This provides the American culture with very specific views and customs. Since religion is one of those fundamental beliefs that founded our country it is easy to see how it becomes a major factor in determining how we act and live in our society today. The facts are that your social background can predetermine your future. David Brooks, a senior editor for The Weekly Standard and who publishes frequently in Atlantic Monthly, Newsweek, and The New York Times, says it best in one of his essays People Like Us, when he says: â€Å"Human beings are capable of drawing amazingly subtle social distinctions and then shaping their lives around them. (253). Truly we shape our lives based on our environment and our beliefs that are familiar to us and we are raised within. That is why people tend to stay with their own group based on the color of their skin, religious beliefs, and social background. We see it everyday in our conscious life, where we go to work, school, shop, or relax. All these are influenced by those subtle social distinctions that make up our lives. Bringing all of these facts together, we can only conclude that man is a driven being. One driven by his environment, and that just by the luck of the social economic environment they were born into predetermines for the most part where they will live, work, and also which religion they will choose to follow. We can almost go as far as to determine the tax bracket into which they will fall. So when is America going to wake and realize that the only way to find diversity is to come to some happy medium with our conscious and subconscious mind? Change that is not to dramatic, but change none the less, seems to be the only answer.