Heartbeats

In this experiment, we studied the effect of caffeine on heartbeat rate and other phenotypes of zebrafish embryos using visual microscopy and simple imaging. A small drop for concentrations of caffeine in embryo medium caused an amount-dependent decrease in heartbeat rate in 2-3-day-old zebrafish embryos, finally resulting in complete heartbeat stop. We observed the decrease pattern in heartbeat rate for an initial acute drop in heartbeat and a period of stabilization followed as 15 seconds and…

This experiment is purposely to study the effect of the concentration of the chemical solution on the heartbeat of the zebrafish larva. There are many advantages in using the zebrafish as the model organism. According to Gore, Monzo, Cha, Pan and Weinstein (2012), the zebrafish is commonly used as the model system of the vertebrate as it has small in size and also have the rapid development in their life. This is one of the reason of the chosen of the zebrafish as the excellent model organisms…

pilocarpine makes the heartbeat slowdown, which was proven to be correct in this experiment. The chemical atropine makes the heartbeat go up and was proven true in this experiment. Epinephrine, makes the heartbeat increase massively, and was proven correct in this experiment. The digitalis, make the heartbeat decrease and was proven in this experiment. Calcium ions make the heartbeat decrease, and this was proven to be true through this experiment. Sodium ions make the heartbeat decrease, and…

Arrhythmia is a problem with the rate or rhythm of the heartbeat. During an Arrhythmia, the heart can beat irregularly (either too fast or too slow). There are four types of Arrhythmia. premature arrhythmia – are extra heartbeats that begin in one of your hearts two lower pumping chambers (ventricles). These heartbeats disturb your normal heart rhythm which causes your heart rate to increase. supraventricular arrhythmias – is a fast heartbeat that begins at the atrium or atrioventricular (is a…

The narrator begins hearing the heartbeat getting “louder-louder-louder!” (5). His conscience is telling him that he has done wrong through an imaginary heartbeat. The protagonist cannot bear the burden of guilt and is overwhelmed by his conscience and is convinced that the old man’s heartbeat is loud and everyone can hear it. Over confidence leads to the protagonist’s destruction. Every night, the protagonist…

have heart arrhythmia or also commonly known as an irregular heartbeat. Heart arrhythmia can be a very serious disease based on the way you live your life day to day and what goes into body everyday. If a person has a heart arrhythmia, he should study the causes, preventions and cures in order to lead the healthiest lifestyle possible. Have you ever heard of heart arrhythmia? Heart arrhythmia is also commonly known as an irregular heartbeat ( Sandhyha Pruthi M.D. www.mayoclinic.org ).…

still teens first love, first kiss, first you my heartbeat gave that funny feeling that brought back a flood of memories our firsts and our love memories that never fade even as the years go flying by I still remember and I know you remember too it was a lot of fun just you and me and our love the many dances we attended the rock and roll beat we shared you strumming on your guitar wanting to be a rock star so many precious memories remain my heartbeat still gives me that funny feeling when…

it means that when someone is guilty they will be the ones who will turn themselves in. Edgar Allan Poe’s “The Tell Tale Heart” is told through the eyes of a madman (the narrator) who commits a murder. While speaking with the police, a chilling heartbeat is sensed by the narrator and he ends up confessing. In the short story “The Tell Tale Heart” by Edgar Allan Poe, readers learn is that when someone does something wrong or unethical, the guilt will catch up to them in one way or another, no…

the role of silence and the role of internal sounds, specifically the heartbeat rhythm. The role of silence in “9” is to emphasize the emptiness of the…

Ohio lawmakers passed a bill which would ban abortions when the heartbeats of the fetus become detectable at around six weeks. The 'heartbeat bill' was approved by both the House and the Senate on December 6, and has been sent to Governor John Kasich who has 10 days to veto it. Otherwise, it will automatically became law. The bill makes an exception when the life of the mother is in danger, but not for rape, incest, and anomalies in fetus. After the Supreme Court legalized abortions in the…