Atrioventricular node

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  • P Wave Deflection

    Once the P wave initiates the signal, the R wave is the first upward deflection after that. Anyone can easily recognize it on the electrocardiogram (ECG). That is because it is the largest one out of all the waveforms. The R wave corresponds to the depolarization of the left and right ventricles. It does not need the Q wave to be the first deflection at all. Also, note that there can be multiple R waves. Throughout the paper, it will discuss all the wave functions, specifically the R wave, any abnormalities and how every waveform and parts of the body rely on one another to work properly. There are five waveforms: P wave, Q wave, R wave, S wave and T wave. The P wave is the SA node and it is the main starter of the electrical conduction of the heart. This wave is the first thing that is seen on the ECG sheet and shows the atrial depolarization. The Q wave is the downward deflection following the P wave and sometimes it can be seen other times it cannot.…

    Words: 717 - Pages: 3
  • Stage 4 Reflective Essay

    When I was in third grade my grandfather was diagnosed with stage four carcinoid cancer. Stage four essentially means that it has reached the body 's lymph nodes and thus it can infect nearly any part of the body. While this diagnosis was bad, it never hit me how bad it was until sophomore year when he appeared to have suffered from a stroke. We got lucky however and it was Bell 's Palsy, and while that was definitely better than a stroke it was still worrisome, this was the first time I…

    Words: 1173 - Pages: 5
  • Sensor Network Case Study

    Terrestrial WSNs: - In Terrestrial WSNs, nodes are distributed in a given area either in a pre-planned manner (sensor nodes are placed according to optimal placement, grid placement, 2-d and 3-d placement models) or in an ad hoc manner (sensor nodes are randomly placed in the target area by dropping it from plane). After all battery power is limited and it cannot be reenergized, terrestrial sensor nodes must be provided with a maximum power source such as solar cells. Underground WSNs: - In…

    Words: 780 - Pages: 4
  • Lung Cancer Introduction

    body cells cultivate beyond quantity in comparison to normal cells. Cancer is able to spread through lymphatic nodes and bloodstream. Furthermore cancer is named from the organ it instigates, for instance Lung cancer activates from the Lungs in the same way cervical cancer typifies as it initiates from the Cervix. Moreover the signs and symptoms of the cancer depends on the forms, locations besides stages of cancer…

    Words: 1363 - Pages: 6
  • Breast Cancer Awareness

    of the body. Breast cancer can spread through the lymph system, which includes an individual’s lymph nodes, lymph vessels and lymph fluid throughout the body. If cancer cells spread through an individual’s lymph nodes, there is a higher chance that the cancer cells could have spread to other parts of the body. (American Cancer Society:2016) Some individuals do not have any signs of having breast cancer and don’t know until after a routine mammogram. Signs include a new lump under the breast or…

    Words: 870 - Pages: 4
  • Symptoms And Characteristics Of Cancer

    This may cause accumulation of errors rapidly in the cell and its progeny. * Those in signaling (endocrine) machinery of the cell. This leads transmission of the error signals to nearby healthy cells as well. * Those that allow the cells to migrate and disrupt more healthy cells away from the primary site of origin. * Those that make the cell immortal so that the abnormal cell refuses to die. Hormonal changes Notable among these are changes in the female hormone levels estrogen. Excess…

    Words: 4932 - Pages: 20
  • Wireless Networking Essay

    It only has a single, one-way communication link. An example of its use is in the pressure measuring systems. The advancement in technology lead to the need of more efficient topologies. The developers started making cost-effective protocols for these designs. For example a Star topology finds its use in easily scaling the number of lights in a room or a router in a house can use the Mesh topology to overcome shadowing and ensure uniform signal strength throughout the house. The major area of…

    Words: 5190 - Pages: 21
  • Wi Sensor Network Case Study

    every such tool community node has typically many components: a radio transceiver with accomplice degree inner accomplice degreetenna or association to an outside antenna, a microcontroller, associate diploma digital circuit for interfacing with the sensors and an energy deliver, normally a battery or accomplice degree embedded kind of electricity gather. A sensor node may also range in length from that of a shoebox all the way down to the dimensions of a grain of dust, even though functioning…

    Words: 835 - Pages: 4
  • Zigbee Technology Analysis

    data transmission. Zigbee basically uses the IEEE 802.15.4 physical radio standard and can provide data rates up to 250 kbps at 2.4 GHz. Also, Zigbee has an advantage of easy expansion of networks as every single node can support more than 64,000 devices using the Zigbee addressing scheme. So, a large network can be created using Zigbee at low cost and low power usage as Zigbee standard allows many devices to sleep when not in use. A single Zigbee based networking device range can go up to…

    Words: 2788 - Pages: 12
  • Case Study: Quadco LLC

    System Description The current system is a relatively simple business system which employs generic office applications. However, the employees of Quadco LLC do heavily rely on the reliability of their system. Therefore they require a fairly robust system to continue supporting oil field services and operations. The current issue with this type of system is that users tend to store critical documents on their workstations which are prone to mechanical failures resulting in loss of data.…

    Words: 2445 - Pages: 10
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