Abstract The purpose of this experiment was to use the muscle tension and the electrical activity in the dominant and non-dominant forearm muscle‚ the flexor digitorum superficialis‚ to analyze the determinants of muscle tension and fatigue‚ and the reasons as to why differences may occur between the dominant and non-dominant arm. The generation of tension in a muscle is determined by the major type of motor unit being recruited‚ as well as the rate in which action potentials are being fired. A subject
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Chapter 5: The Skeletal System I. Introduction. The skeletal system consists of the bones‚ along with the cartilage and fibrous connective tissue that make up the ligaments that connect bones to bone at joints. A. Functions of the Skeleton. 1. The skeleton supports the body. 2. The skeleton protect soft body parts. The skull protects the brain‚ the rib cage protects the heart and lungs‚ and the vertebrae protect the spinal cord. 3. The skeleton produces blood cells. Red bone marrow contains
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Skeletal System Study Guide – Use the lecture folder to help you answer these questions. The more detail you add‚ the better prepared for the test you will be. 1. What are the functions of the skeleton? support the body protection of internal organs - provide sight for tendon and other connective tissue attachment - Storage of materials (minerals) - Hematopoiesis (blood formation) 2. How many bones do we have in our body? 206 in the adult body 3. What do bones
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The Skeletal System The skeletal system is made up of bones‚ the joints where bones meet‚ and the connective tissues called cartilages that hold the bones together. The human skeleton is made up of 206 bones‚ and can be divided up into to two parts‚ the Axial Skeleton and the Appendicular Skeleton. (Adams et al.‚ pg. 4)(Boundless‚ 2013) Axial Skeleton The axial skeleton forms the main axis or core of the skeletal system. It consists of the skull‚ vertebral column‚ and thoracic cage. As noted by
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Introduction: Skeletal muscle cells are specialized cells that contain multinucleated muscle fibers called myocytes. These myocytes contain thicker fibers that facilitate the release of calcium‚ the generation of an action potential within the sarcolemma‚ and the subsequent production of a muscle contraction. Muscle contractions are a direct byproduct of motor unit recruitment‚ and for this lab we can examine these effects with aid of a finger pulse transducer and a bar stimulus electrode. The
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Chapter 6 The Skeletal System: Bones and Joints PART I * A born baby has about 276 bones while an adult has 206 bones‚ this is because as you grow some bones join together in a single bone. * Bones are 20% of your weight. * The Skeletal System consist of: * Bones * Cartilages * Tendons * Ligaments * Joints * Functions of the skeletal system -bones perform various anatomic (mechanical) & physiologic function. They: 1. Stabilize‚ provide shape & support the
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repair the fractured femur and a biopsy of the bone tissue indicated that the composition of the osteoid was normal. Healing of the fractured femur is proceeding slowly. 1. What organ(s) is(are) involved? The organ that is involved would be the skeletal system. 2. What primary tissue type is involved? The primary tissue involved is bone tissue. 3. What specific type of tissue is affected? The specific tissue that is affected is the connective tissue. 4. What specific types of cells produce
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Thato’s muscle had remained unused for 6 weeks. Once the cast is removed and he steps down from the examination table‚ his muscle begins to contract. Due to this 6 week period of rest‚ the muscles initial strength of contraction may be significantly low as compared to its strength a few minutes later. The strength of contraction of his muscle increases to a plateau‚ which is termed the staircase effect. Due to his muscles low initial strength of contraction‚ Thato loses his balance and falls. 1
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Function of the Skeletal System 1. Support 2. Movement: The bones of the upper and lower limbs pull and push‚ with the help of muscles. 3 storage as a mineral store. 97% of the body’s calcium is stored in bone. Here it is easily available and turns over fast. In pregnancy the demands of the fetus for calcium require a suitable diet and after menopause hormonal control of calcium levels may be impaired: calcium leaches out leaving brittle osteoporotic bones. 4. Protective. Skull for the brain
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Stress Relief Muscle tension often occurs when we are under mental stress. Stretching helps us to relax our muscles and our minds. Muscular Training Muscular Endurance With increased muscular endurance‚ you will be able to perform physical activities that require muscle movement over a longer period of time. Muscular Strength With increased muscular strength‚ you will be able to apply maximum force against a resistance (like lifting a couch) and be less fatigued. Muscle Mass and Basal Metabolism
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