Skeletal muscle

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 against the conduction of excitatory ions, i.e. Ca2+, from one fibre to another. This ensures that the atria completely empty the…

conduction velocity of action potentials. Muscle are either directly joined to the bone or connected by tendons, which by definition are resilient bundles of collagen fibers. Motor nerves innervate the fibers of the skeletal muscles, which is controlled voluntarily. The action potential in a muscle fiber allows for an increase in the influx of calcium causing what we know as a twitch. A twitch is a contraction of the muscle due to only one action potential generated. Muscle nerves govern…

serve heat condition that attacks organs and muscles such as the liver, gut, and other body muscles. It attacks the body temperature and elevates it to outrageous levels. This is caused by extreme exercise and being in hotter than normal temperatures. When this heat illness occurs the body temperatures usually rises to above 105 degrees Fahrenheit. EAMCs better known as exercise-associated muscle cramps are painful contractions of skeletal muscles during or after exercise. Most people…

Fibromyalgia disease is found in the muscle system and was once thought to be a mental disorder. In the early 1800s it was first described by doctors, the symptoms were stiffness, aches, pains, tiredness, and difficulty sleeping. In the early 1820s a Scotland doctor described the tender points if fibromyalgia. In 1976, the name was changed to fibromyalgia because the swelling wasn’t causing the pain in the body. Duchenne muscular dystrophy is another disease found in the muscle system. In the…

system provides an important function for the human body. It is perhaps one of the most important of the systems in that muscles, bones and joints provide the mechanisms for movement that facilitates the continuance of life processes, as well as the movements that make for an enjoyable life experience. Without the musculoskeletal system, which is comprised of bones, joints and muscles there would be no blood flow, heartbeat or digestion, and there would certainly be no physical movement. Bones …

building enhancer that you can put into your body is protein. Protein helps carry all the necessary muscle developing enzymes to where they have to be. Protein can also increase your energy state and allow for more vigorous exercise routines. Whey protein could be one of the most effective forms…

a very popular alternative treatment all over the world. Invented by an American who had a great interest among people. Chiropractic treatment basically comprises of treatment of joints and the bones of the body through manual means. The tendons, muscles and ligaments of the body are treated with the hand which is considered to be extremely effective. People usually go for chiropractic treatment when other medical treatments have failed. It is usually chosen by many people because it is…

1. Description of the chosen disability. Duchenne muscular dystrophy (DMD) is a progressive genetic condition that causes skeletal and heart muscles to breakdown leading to difficulties in mobility and walking (Muscular Dystrophy Australia [MDA], 2015, para. 1). DMD predominantly affects males with approximately “…one in 3500 live male births throughout the world” (MDA, 2015, para. 1). According to Emery, Muntoni, and Quinlivan (2015, p. 31) the most common concerns from parents with children…

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…

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…