The Muscular System Teacher pages The muscular system allows us to move. Adults have a certain fixed number of muscle cells‚ approximately 602. . Through exercise‚ such as weight lifting‚ the cells enlarge but the number of cells does not increase. Structure and Function There are three types of muscle tissue—smooth‚ skeletal‚ and cardiac. Each has its own distinctive function‚ and therefore‚ its own distinctive structure‚ but all muscles allow movement of some kind. Skeletal Muscle
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The body attempts to maintain homeostasis of a resting blood pressure through negative feedback. When an individual is at rest‚ this results in a decreased demand on their bodies respiratory and cardiovascular system (Martini‚ Ober‚ & Nath‚ 2015). Therefore‚ the individual’s blood pressure is maintained by central regulation. Central regulation consists of the cardiovascular system‚ assistance with the neural and endocrine system via the release of hormone regulators. This form of regulation incorporates
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S E 2 Skeletal Muscle Physiology O B J E C T I V E S 1. To define these terms used in describing muscle physiology: multiple motor unit summation‚ maximal stimulus‚ treppe‚ wave summation‚ and tetanus. 2. To identify two ways that the mode of stimulation can affect muscle force production. 3. To plot a graph relating stimulus strength and twitch force to illustrate graded muscle response. 4. To explain how slow‚ smooth‚ sustained contraction is possible in a skeletal muscle. 5. To graphically
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be lethal if not ventilated properly. This process is called pulmonary ventilation and is facilitated by three major components of the respiratory system: airways‚ lungs‚ and muscles; all of which play a vital role in the respiratory cycle and homeostasis. The respiratory cycle begins in the airways and during inhalation‚ the mouth‚ nose‚ pharynx‚ larynx‚ trachea‚ bronchi‚ and bronchioles assist in carrying oxygen rich air between the bodies exterior to the lungs‚ and ventilates carbon dioxide
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Investigation Part A Term 1 2014 The Effect of Exercise on the Maintenance of Homeostasis Name: Jonah McLennan Class: C Teacher: Mrs Hart Group Members: James Wilkinson‚ Samuel Stark‚ Christopher Daly‚ Thomas Yip‚ Andrew McWhinney‚ Joshua Zuill. Due Date: Monday 10th March 2014 (Week 7) Abstract The levels of an internal environment have been vastly researched to gain a better understanding of homeostasis and its mechanisms. However the immediate objective
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The phenomenon of homeostasis is understood as the ability the body has to stabilise its internal environment despite the ever changing external conditions (Waterhouse‚ 2007). This internal environment is an atmosphere which surrounds the cells and is therefore the medium in which the cells are in direct contact with in the body (Sherwood‚ 2001). The internal environment is essential for cell survival because cells require a constant supply of oxygen and food which is exchanged from the external
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Principles of Muscular Flexibility The overload and specificity of training principles also apply to development of muscular flexibility. To increase the total range of motion (ROM) of a joint‚ the specific muscles surrounding that joint have to be stretched progressively beyond their accustomed length. The principles of MODE‚ INTENSITY‚ REPETITIONS and FREQUENCY of exercise also can be applied to flexibility programs. 1.MODE OF EXERCISE * BALLISTIC STRETCHING Ballistic stretching is
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Cell Transport And Homeostasis The roles of different types of cell-membrane proteins in the preservation of body organs donated for transplant is very vast. Certain cell-membrane proteins carry several different types of nutrients that are beneficial and are sometimes very important to keep organs that are to be transplanted healthy and fresh. Organic nutrients are some very good preservers. One of the most transplanted organs is the kidney. It is important that this organ has nutrients
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What is Duchenne and Becker muscular dystrophy? Muscular dystrophies are a group of genetic conditions characterized by progressive muscle weakness and wasting (atrophy). The Duchenne and Becker types of muscular dystrophy are two related conditions that primarily affect skeletal muscles‚ which are used for movement‚ and heart (cardiac) muscle. These forms of muscular dystrophy occur almost exclusively in males. Duchenne and Becker muscular dystrophies have similar signs and symptoms and are caused
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activities of daily living. PNF is a type of passive stretching that uses alternating contraction and relaxation movements to increase flexibility. The reason why PNF is better than other forms of flexibility training is that it helps the body’s muscular inhibition. For the elite performer‚ the most useful type of PNF is the CRAC (contract-relax‚ antagonist-contract) technique‚ which uses isometric muscle contractions as its basis. PNF stretching is best performed with a partner. Muscle recruitment
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