Mechanomyogram for Muscle Function Assessment: A Review Md. Anamul Islam*‚ Kenneth Sundaraj‚ R. Badlishah Ahmad‚ Nizam Uddin Ahamed AI-Rehab Research Group‚ Universiti Malaysia Perlis (UniMAP)‚ Kompleks Pauh Putra‚ Arau‚ Perlis‚ Malaysia Abstract Background: Mechanomyography (MMG) has been extensively applied in clinical and experimental practice to examine muscle characteristics including muscle function (MF)‚ prosthesis and/or switch control‚ signal processing‚ physiological exercise‚ and
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I will be talking about exercise 3‚ the skeletal muscle lab. I will be going over the contraction of a frog’s gastrocnemius muscle. An overview of muscle contraction is based on the organization of the cytoskeletal proteins. The contraction is the shortening of a sarcomere‚ which is caused by the thick myosin filaments sliding past the thin actin filaments. The actual filaments aren’t getting shorter just sliding past each other. The contraction is caused by physical interaction of the myosin heads
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Introduction Muscle is one of the four main types of tissue‚ and is primarily involved in movement. There are three types of muscle tissue: skeletal‚ smooth‚ and cardiac. Skeletal muscle was investigated in this lab. Skeletal muscle is composed of two filaments called actin and myosin‚ which run parallel to each other. Actin has a protein that run along it called tropomyosin‚ that prevents actin from binding to it‚ unless calcium is bound to a part of the tropomyosin called troponin. Sets of actin
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order for a muscle to contract requires a nerve impulse to arrive at the neurotransmitter junction. This then causes a release of acetylcholine (ACh) from the presynaptic terminal. By binding with its receptors on the membrane of the muscle fiber‚ which opens sodium channels generating an action potential that spreads through the length of the fiber‚ stimulating release of calcium from the sarcoplasmic reticulum. Calcium is what activates the contractile mechanism‚ causing the muscle fiber to shorten
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components i.e. ground substance (or matrix) and fibres. Despite the complexity of the human body and the diversity of organs it contains; there are only four tissues called basic or principal tissues - these are epithelium‚ connective tissue‚ muscle and nerve tissue. The following paragraphs describe the main structural features‚ functions and sub-divisions of each type of tissue. EPITHELIUM Epithelium is characterised by closely packed cells and has very little extra-cellular material
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1.) What muscle did the winging of the scapula suggest to be paralysed? Why does this sign occur? The muscle that was suggested to be paralysed due to the winging of the scapula is the Serratus Anterior muscle. The Serratus Anterior muscle’s origin is situated on the external surface of the lateral surfaces of the upper 8 to 9 ribs (ribs 1 to 8) while the insertion of this muscle is located on the costal surface of the medial border of the scapula. Therefore‚ this muscle is innervated by the long
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April 2013 Muscle Growth DR. PAUL D. THOMPSON‚ a 60 year old marathon runner and chief of cardiology at Hartford Hospital‚ stood in front of a medical audience recently and began his talk with a story about himself. Hes had been lifting weights since he was 12 years old. Dr. Thompson is now a small and wiry with not a bulging muscle on him. He was speculated that he must have a genetic inability to build muscles‚ no matter how hard he works at it. But are his muscles healthy? Muscle researchers
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paper examines the published case study Whole Foods Markets‚ 2005: Will There Be Enough Organic Food to Satisfy the Growing Demand? (Hitt‚ Ireland and Hoskisson‚ 2007‚ p. C534). Although the published study addresses numerous aspects of Whole Foods Market’s business as a leading international retailer of “natural” organic foods‚ the analysis provided herein is focused on Whole Foods Market’s ability to meet future growth demands. This paper explores Whole Foods Market’s basic internal environment
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smooth muscle. In cardiac muscle‚ each heartbeat is triggered by the hearts own pacemaker cells‚ which initiate electrical discharge and when this reaches the contractile muscle cells (the cardiomyocytes)‚ they create an action potential which increases the concentration of calcium ions into the cell. Calcium ions play a key role in activating what is known as the contractile machinery – the actin and myosin filaments. The cardiac action potential‚ unlike other forms of muscular contraction‚ will
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effects of whole grain and refined-grain foods on energy consumption and satiety‚ or hunger. Evidence through epidemiology maintains that a diet rich in whole grains is related to a decreased risk of chronic diseases. These diseases include‚ but are not limited to‚ obesity‚ type 2-diabetes‚ coronary heart disease‚ and a number of cancers. Whole grains contain a substantial amount of antioxidants‚ which according to the study conducted‚ may increase the strength of an individual’s immune system‚ whom
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