Cardiac muscle

Effects Powerful Enough To Deteriorate Muscle And Hope Need an attention-getter. In 1861, Guillaume Benjamin Amand Duchenne wrote De L'électrisation Localisée in which he described the disorder now referred to as DMD. Although later discovered, Edward Meryon described this genetic disease first, but by that time it had the title of “Duchenne” (Abramovitz p. 19-21). Out of nine different types (“Duchenne”), Duchenne MD, the most common of childhood muscular dystrophies (Abramovitz p. 19-21), is…

Introduction Sudden cardiac death (SCD) is a world wide health problem resulting in one-fifth of unexpected deaths in the western world. Ventricular fibrillation (VF) is one of the life-threatening arrhythmias contributing to the increasing number of individuals needing urgent medical assistance (Wellens, Gorgels & Munter, 2013). The following case study will explore a complex critically ill patient who has suffered from a ventricular tachycardia (VT) and VF due to dilated left ventricle (LV)…

Who is the Real Winner? The question of whether athletes are born or made has become the leading topic of athletic debate in the recent decade. Were esteemed athletes such as Michael Phelps, Usain Bolt, Lionel Messi, and Rory McIlroy born with gifted talent, or were they made elite athletes through hard work and the right nurturing?. Through the development of the human genome and the increasing research into genetics, many scientists and athletes have wondered if nature or nurture has more of…

desire for more muscle mass, a better body image, ease of access, and pressure from parents and coaches; the effects of this abuse are depression, health effects, and even deaths. Solutions to help keep PEDs from the sports world include more testing and harsher punishments. The first reason for the growing abuse of PEDs in sports is to grow muscle faster and better athletes. Modern pharmacology developed in the 19th century and experimented with drugs to improve strength and build muscle…

Whether you are sitting at a desk doing a physiology lab report, or playing a sport in the park, you are constantly using muscles to accomplish those tasks. The fingers that are used to type the lab report rely on individual myofibrils to contract and cause movement. However, this mechanism occurs on a microscopic level, and predominantly in the myofibers. When a motor neuron experiences an action potential it releases acetylcholine to the motor-end plate which binds to a receptor on the…

5. Normal muscle contraction occurs in a series of steps, and they are as follows: First, a motor neuron must have acetylcholine released in the synaptic cleft. The acetylcholine is then able to bind with receptors found in the cell membrane. This binding causes the Ca+/Na+ channels to open. The terminal cisternae then releases calcium into the muscle fiber. Calcium will begin to bind to troponin. The troponin moves tropomyosin out of the way since it blocks the actin’s active site. Next, actin…

Tissue in your body is used to help your body move to bend over and pick up a box that is on the floor. Muscular tissue is used to move muscles and bones and connective tissue connects the muscles/tendons to the bones to help with movement. Nervous tissue is also used. It’s needed to tell you to pick up the box and tell your muscles and bones to move the way you do to bend over to pick the box up. First, the rectus abdominus pulls forward to bend over, the latissimus dorsi and gluteus maximus…

might not have been completely relaxed. For the reflex time to be measured accurately the leg must be relaxed completely, if not the contraction strength will be lower due to tense muscles. Another error which could have occurred was then when applying the reflex hammer was a reflex would have occurred from an unwanted muscle which could have affected the results. There could have been calibration errors when using the apparatus and also measurement errors may have occurred when measuring the…

Introduction: A cardiac output, also know as minute volume is the volume of blood ejected from the left or right ventricle of the heart in one minute. It’s the primary determinant of oxygen transport within the heart and entire body. Sufficient blood flow is highly important especially during exercise because the body will need much more oxygen. With the need for more oxygen, the heart will begin to beat and pump faster during exercise. As the heart rate increases so will the blood flow, also…

The flex belt is the first ab belt toning system cleared by the FDA for toning, firming, and strengthening the stomach muscles. With the help of flex belt, you can trained your abs even if you are too busy or tired for the traditional workout. This device is by far the most effective up till no. The flex belt is designed to send an electrical wave to the abdominal muscles. This signal should than trigger a clenching reaction. The flex belt is designed to do work for the user while they handle…