Lab 34b Essay Example

Lab 34b Paper Lab 34b Cardiovascular Physiology 1. What was the baseline heart rate for the frog? 59-63 bpm 2. Which wave is larger, the one for atrial contraction or the one for ventricular contraction? Why? Ventricular. It shows the strength of the ventricle as it pumps blood, and it is a thicker muscle to pump stronger as it contracts 3. At what time during the contraction cycle was it possible to induce an extrasystole? The time during the relaxation part of cardiac cycle. 4. By clicking the Multiple Stimulus button and delivering 20 stimuli/sec, were you able to achieve tetanus? Why or why not? No, because of the long absolute refractory period, it cannot be tetanized by multiple stimuli. 5. What happens to the heart rate with vagal stimulation? HR slows and eventually stops during vagal stimulation 6. What happens during vagal escape? HR increases gradually 7. List the frog heart rate for the following conditions: __49_ bpm with 5Â °C Ringer’s solution __59_ bpm with 32Â °C Ringer’s solution 8. Describe the effect of temperature on heart rate: A decrease in temp causes a decline in HR; increasing the temp increases the HR, therefore being a direct relationship between the two 9. Did this effect match your prediction? Explain. Yes, as temperature increases so does HR as in a fever, same affect with cold; temp drops, so does HR 10. What was the heart rate after treatment with pilocarpine? _44__ bpm with pilocarpine 11. Did this effect match your prediction? Explain. Yes, pilocarpine is a direct acting cholinergic agonist that decreases the HR 12. We will write a custom essay sample on Lab 34b specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Lab 34b specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Lab 34b specifically for you FOR ONLY $16.38 $13.9/page Hire Writer What was the heart rate after treatment with atropine? _70__ bpm with atropine 13. Are the effects of pilocarpine and atropine the same or opposite? Opposite 14. What was the heart rate after treatment with epinephrine? _80__ bpm with epinephrine 15. Did this effect match your prediction? Explain. Yes, epinephrine is an adrenergic agonist that binds to adrenergic receptors that increase the HR Â  16. What division of the autonomic nervous system does the addition of epinephrine imitate? Sympathetic nervous system 17. What was the heart rate after treatment with digitalis? __42_ bpm with digitalis 18. Describe the effect that digitalis had on the heart: Slows the heart rate 19. Which ions resulted in arrhythmia of the frog heart? Calcium, sodium, and potassium all cause arrhythmias on the frog heart 20. Which ion had the greatest effect on the frog heart? Explain. K+ ions had greatest effect; because the increased K+ effect decreases the resting potential of cardiac ms plasma membranes, therefore decreasing the contraction force of the heart.

Sample High School Informational Essay - Choosing Styles and Using Them

Sample High School Informational Essay - Choosing Styles and Using ThemIf you are involved in writing a sample high school informational essay, you will want to make sure that your topic is one that interests the readers. If you take the time to consider the subject of your essay and see if it will interest your readers, you can make sure that you choose topics that will not bore your readers.One of the most difficult things about writing a good essay is coming up with a topic that you know that many people will be interested in. Once you have this chosen topic, the next thing you need to do is choose a style that will best suit the topic. This is where a sample high school informational essay comes in handy.For instance, if you are writing an essay about bullies in your school, you may want to use a very humorous style. You will want to start off by using a funny pun or word play that will get your readers to laugh. You may even want to write your essay so that you will be able to u se the word 'bully' multiple times throughout the essay.When you have a different style of writing, you will also be able to find plenty of other places to use the word 'bully.' For instance, if you write a humorous essay about bullying, you can also use the word 'bullshidoin' to mean something a little different. In fact, you may even find that you will be able to use the word 'bullshidoin' more than once in your essay.If you choose a formal style of writing, you will find that this may be something that will get your classmates to laugh at. Not only can you use formal speech when writing an essay, but you may even find that formal writing can get some of your classmates to stop giving you their looks. The last thing you want is for your classmates to stop staring at you in fear, so you will want to make sure that you use a formal style of writing.When you are writing a high school informational essay, you should be able to find ways to use a variety of styles. It is important that you are aware of all of the styles that you can use in order to be successful in your essay. You will want to use the sample high school informational essay that you are going to use in order to look for all of the different styles of writing.Once you have found a variety of styles that you can use, you will be able to find several different ways to make sure that you are using the right words for your topic. You will want to make sure that you are using your vocabulary in a way that is appropriate for the topic. You will also want to look for all of the different styles of writing that you can use, so that you will be able to provide the information that you need without getting bogged down with all of the different styles.Remember that the best way to write a high school informational essay is to look at examples of how other people write essays. If you find some of the examples in a sample high school informational essay, you will be able to come up with some ideas about what st yle of writing you should use in your own essay. If you follow these ideas, you will be able to write a great essay that you can use to impress your classmates and have them not only think that you are intelligent, but that you are also a writer.