The Physiological Effects Of Current Formation On The Bodies Of Electric Eels Blair Athol / 12 Report

427 words - 2 pages

Aatmaj Dasondi 9G
Electric Eels
Electric eels generate their killer and large voltages by its highly specialized nervous system that has the capability to synchronise the activity of disc-shaped, electricity-producing cells packed into a specialized electric organ. It activates the electrical impulse when in danger by the nervous system through a command nucleus which decides when the electric organ will fire based on the given situation of the eel. When the command is given by the nervous system, the job of a complex array of nerves is to make sure that thousands of electric cells activate simultaneously, no matter what the difference of the distance is for each cell from the command nucleus.
The electrogenic cells or commonly known as electric cells carry a negative charge or electrical impulses with a little less than 100 millivolts on its outside compared to its inside. When the command signal arrives, the nerve terminal a minute puff of a neurotransmitter called acetylcholine which creates a transient movement with low electrical resistance connecting the inside and the outside of one side of the cell. This results in each cell behaving like a battery with activated side carrying a negative charge by the electrons and the other side with a positive charge.
Because of the cells which are oriented inside the electric organ like flashlight batteries piled next to each other, the current generated by an activated cell basically shocks any other creature that the eel wants to shock in approximately two milliseconds. Because the eel lives in water, which provides additional outlets and results in generating larger voltage. Eels can shock other creatures without shocking themselves. This is due to the severity of the shock which depends on the amount of time the current is flowing through the body. To cause an eel to spasm, 200 milliamps of current must be flowing through it for 50 milliseconds, though the eel produces less energy than that because the current only goes for 2 milliseconds. A large part of the current dissipates into the water through the skin and therefore reduces the current even more near internal structures which includes the central nervous system or the heart.
The current received by any other small prey is only a little portion of the total current generated by the eel. The current discharged into their smaller bodies is much larger proportionally. A prey which is 10 times smaller than the eel itself is about 1,000 times smaller in volume. Therefore small animals close to the eel get shocked, rather than the discharging eel itself.


The Effects of Smoking on Lung Tissue - Biology - Lab Report

2559 words - 11 pages 2 A Comparison of the Effects of Tar Levels in Cigarettes on Ciliary Movement By Exposing Mollusc Gill Cilia to Cigarette Extract and Recording the Beat Frequency D. Perklic B-W03: Delaney Perklic Abstract This study was conducted to observe the effects tar levels in cigarettes on the function of cilia movement. It was hypothesized that the tar levels within a cigarette would have an affect on ciliary action. The study was carried out using a

The restricted freedom of women - Montgomery Blair High School - essay

714 words - 3 pages and look forward to growing together to be the best we can be. Paperwork and forms must be submitted on the myMCPS Parent Portal prior to our first clinic/practice on Wednesday, August 8th at 5PM. Be sure to check the Springbrook Athletics website for information on what forms are needed. Should you have any questions, concerns or need help with preparation for the season, feel free to contact us! On behalf of Springbrook Cheerleading, Coach

the effects of domestic and global free trade on australian polocies - lurnea hs/ economics - assignment/ report

1195 words - 5 pages Analyse the effects of domestic and global free trade and protection policies on the Australian economy. Australia has had a long history of protection in the manufacturing sector where tariffs and quotas have been used to shield domestic firms from direct imports competition. Much of this protection was put in place after Federation in 1901 when Australian governments used a policy of protection from imports to develop the manufacturing sector

the study of the changes in bone formation - djds - genetics

1076 words - 5 pages ? As you flip through the newspaper, you notice that the front page article is about evolution. You are curious, since you are becoming an expert on evolution, so you read it. These are the first 4 sentences of the article… There is no way that evolution happened. It is something that scientists made up. There is no proof that evolution ever happened. How can we know what happened millions of years ago? After reading the whole article, you feel


2264 words - 10 pages “COUNTERING THE EFFECTS AND OF SENDENTARY NATURE AND PHYSICAL INACTIVITY ON KNOWLEDGE WORKERS” MELVIN KAAS 216070046 KNOWLEDGE ECONOMY RESEARCH REPORT 1 29 AUGUST 2018  MRS WAFEEQUA DINATH Table of contents pg. 1 Introduction 1 2 Understanding knowledge workers 2 2.1 What are knowledge workers? 2 2.2 Characteristics of knowledge workers 2 3. Physical and mental effects of knowledge work 4 3.1

Effects Of Globalization On The Environment

584 words - 3 pages Free Effects of Globalization on the EnvironmentGlobalization has had a huge impact on the world in a number of ways. It has increased the integration of countries' individual economies, the rise in the world trade and multinational companies, and the effect of large amounts of money moving in and out of economies throughout the world. People around the world are more connected to each other than ever before. Information and money flow more quickly

Current Event Report II - The Washington Post

826 words - 4 pages Free Current Event Report II PAGE \* MERGEFORMAT 4 Current Event Report IIReligion and Philosophy HUM 400 003016The Washington PostObama Reverses Bush Policy on Stem Cell ResearchObama Reverses Bush Policy on Stem Cell ResearchThe article that I chose for my current event report is about the ban on federal funding being lifted for stem cell research. In 2001, formal President George Bush limited federal funding for embryonic stem cell research to

The Effects Of Lead Poison On Children

2547 words - 11 pages Free . Researchers here found the cue chalk could actually be a source of environmental lead(Modica 1996). There are many effects or symptom that lead poison can have on a child if diagnosed at an early age. These injuries our so severe because the body and the brain are not fully developed, which can leave children with subtle but irreversible injuries that does not appear until many years after the exposure of lead(Monheit, 1). In young children, lead

The Effects Of Fairy Tails On Children

1181 words - 5 pages Most of parents read fairy tales to their children and these children enjoy listening fairy tales. However, in fairy tales there are some characters which are taken as a model by children and patterns connecting with some patterns like wedding. In The Green Fairy Book, in 1982, as Lang refering to Lang to emphasises fairy tales to have fun for children but also teach them. Those characters and symbols have active roles on children's behaviour

Lab report on The effects of binocular depth cues on the accuracy of visual depth perception - 175.102- psychology as a natural science - Assignment

4219 words - 17 pages The effects of binocular depth cues on the accuracy of visual depth perception 175.102-Psychology as a Natural Science Abstract The purpose of the present study was to investigate the role of binocular cues in visual depth perception. It was hypothesised that binocular vision would result in better visual depth perception compared to monocular vision. The participant was a 21-year-old female undergraduate student. The experiment was set up as a

Report On The State Of Kurnell

1028 words - 5 pages recreational activities. In particular, one of the main threats is commercial and recreational fishing. The effects fishing has include effects on food webs and fish communities, by-catch of non-target species and impacts on aquatic habitats. Other environmental impacts of fishing and boating in general include littering, damage to seagrass from anchoring and propellers, and bank erosion from boating wakes.Due to contaminants in fish and other seafood

formation of the brain by the subsequent generation of the primitive brain vesicles. - Florida - Orgnogenesis

510 words - 3 pages containing a TATA box, the RNA polymerase II transcription factor TFIID is responsible for binding to this key promoter element. The binding of TFIID to the TATA box is the earliest stage in the formation of the RNA Polymerase II transcription initiation complex, which is esssntial in catalysing the formation of mRNA and proteins in later stages of transcription. Other transcription factors such as AP-1, NF-kB and STATs are involved in Histone

The Effects Of Cannabis On The Human Reproductive System

1749 words - 7 pages Free dream-like state and tiredness. There are many effects to the oral use of marijuana, some of which are psychological, physiological, cardiovascular, respiratory and neurological.In searching for evidence of the effect of marijuana on the reproductive system I learned of how they figured out that it does have consequences on males. They found a cellular signaling system that responds to THC as well as to anandamide. Now anandamide is a substance

Effects Of The Industrial Revolution On The Working Class Family

1556 words - 7 pages deprived of this lunch break. Such long hours had many physical consequences on the children. Some children's growth was stunted and others' bodies deteriorated at a very young age. However, these young children had no time to slow down or work a lower pace and when they did they were "strapped at times, when [they] were not quite ready to be doffing the frame when it was full" (Doc. 1)A Parliament Commission investigated the mines in which children

The Effects Of Globalisation On The Australian Business Culture

2809 words - 12 pages , and obediently throw themselves to destruction like the soldiers who slow-walked themselves towards the machine guns of the enemy lines on the first day of the Battle of the Somme" (James, 1999). He expands to suggest that the global business culture is greedy, with spending only rarely adequate to meet needs. He is also passionate about the global effects this culture is instilling on education stating, "Business culture sees no reason why