Electrical conduction system of the heart

task 1. The pacemaker is a treatment for the heart disease called arrhythmia. An 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…

Premature Ventricular Contraction A premature ventricular contraction is an irregularity in the normal heart rhythm. These contractions are extra heartbeats that occur too early in the normal sequence. In most cases, these contractions are harmless and do not require treatment. CAUSES Premature ventricular contractions may occur without a known cause. In healthy people, the extra contractions may be caused by: • Smoking. • Drinking alcohol. • Caffeine. • Certain medicines. • Some…

The cardiovascular system, or blood-vascular system is comprised of the heart and blood vessels. The heart is the strongest pumping muscle in the body. Important mechanics of the heart allows the heart to properly do its job The heart is responsible for intrinsic cardiac conduction, the cardiac cycle, and cardiac output. The blood vessels in the cardiovascular system are just as important. The blood vessels aid in blood flowing to body tissue, maintaining blood pressure, and controlling blood…

Identify or trace the path of a red blood cell through all anatomical/structural areas of the heart. • The red blood cell carrying oxygen is pushed into the aorta through the aortic valve by contraction of the left ventricle (Marieb, Mitchell, Smith, 2013, pg. 446). • From the aorta, the red blood cell travels into one of the arteries from the arterioles then will hit the capillaries (Marieb, Mitchell, Smith, 2013, pg. 446). • Within the capillary, the oxygen molecule that is taken by the red…

part of the heart because of blocked blood flow. As this happened he fell unconscious because the extra electrical pathways of his heart's chambers stimulated, causing a rapid abnormal heart rate and an insufficient blood supply to the brain. After placing sensors on his body to monitor his heart's electrical activity the healthcare provider established that the front of his heart experienced a blockage in the past. Both events were painless, but his last clot attacked the conduction system.…

of Ventricular arrhythmia, or a rapid heart beat that arises from improper electrical activity of the heart presenting as a rapid heart rhythm. It starts in the bottom chambers of the heart, called the ventricles. This is a potentially life-threatening arrhythmia because it can cause low blood pressure and may lead to ventricular fibrillation, asystole, and sudden death. Causes Arrhythmias are due to problems with the electrical conduction system of the heart. Symptoms 1. Run of three or more…

Identify or trace the path of a red blood cell through all anatomical/structural areas of the heart. The path of a RBC consist of it first beginning in the heart as the RBC transports oxygen into the aorta by the aortic valve through contracting of the left ventricle. From the aorta, the RBC then travels through an artery with the help of arterioles to reach the capillaries. When in the capillary, the oxygen molecule that is carried by the RBC then detaches and travels through the capillary into…

1. Yes. The heart of the frog contracts and relaxes rhythmically. This behaviour is shown by the observation of the general fluctuations in the force values as well as the consistent patterns of the ECG which occurs in regular intervals. 2. This delay is primarily caused by the atrioventricular node (A-V node) and the adjacent conductive fibres. Conduction in cardiac muscle is hindered by the decreasing number of gap junctions along the pathway of conduction which creates a resistance…

inside wall of the heart through a thin, flexible catheter. In other words, it is a pacemaker without the leads (Bongiorni et al., 2016). A pacemaker is a small device that is placed in the chest or abdomen to help control abnormal heart rhythms. This device uses low-energy electrical pulses to prompt the heart to beat at a normal rate (60-100 beats per minute) (Mann, Zipes, Libby, & Bonow, 2015). Brief History and Background The idea of artificial electrical stimulation of the heart can be…

(Oxford Journals, 2016). The major coronary vessels are on the surface of the heart. What is the advantage of that location? The heart contains major coronary vessels on the surface. The location of it helps to supply oxygen to different areas of the heart. Since they are on the surface the heart's efficiency increases as it decreases other potential problems. However, if these vessels were located inside of the heart it may result in a decrease in strength of the heart's wall. The vessel's…