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 & Protection‚ Body Movement‚ Hemopoiesis‚ Mineral Storage 2. What is the difference between osteoclasts and osteoblasts? Osteoblast are cells that generate bones‚ osteoclasts are cells that destroy bone. 3. How many bones do we have in our body? 206 4. What do bones need in order
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Muscles attached to scapula: Levator scapulae origin is transverse processes of C1-C4‚ insertion at superior angle of scapula‚ it moves scapula and flexes neck. Pectoralis minor’s origin is ribs 3-5 and insertion at coracoid process of scapula‚ it depresses scapula and elevates ribs. Rhomboids Major and Rhomboids Minor’s origin at spinous processes T1-T4‚ insertion at medial border of scapula‚ they move scapula. Serratus anterior’s origin is at ribs 1-9‚ insertion is at medial border of scapula
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The Skeletal System is the framework of the body‚ consisting of 206 bones as well as a network of tendons that is made of tough band of fibrous collagen tissue connecting a muscle to bone‚ ligaments connecting bones to joint and cartilage that allows some flexibility of movement. The skeletal system serves 4 functions: (1) Giving the body its shape (2) Protecting the vital internal organs (3) Allowing for movement (4) Storing minerals and producing blood cells The skeletal system has 6 basic components:
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efficiency * Muscle fiber type * Higher efficiency in muscles with greater
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Muscle and joint actions both affect the performance of a discus-athlete. Various types of joint actions and muscular actions can take place once when the movement is executed by the athlete. As an example‚ a discus-thrower usually activates the horizontal abduction and the horizontal adduction during the preparation or execution phases of his/her throw. The ground contact of the discus-thrower is very important as it keeps the thrower’s center of gravity station within his/her strongest point of
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A muscle is a group of cells called fibers‚ and are generally quite big. One muscle fiber has a large amount of myofibrils‚ which are muscle proteins in the shape of cylinders. These myofibrils contain two different types of filaments‚ which run along the axis of the fiber in hexagonal patterns. The two types of filaments are thick and thin filaments. Every thick filament is surrounded by six thin filaments. Both thick and thin filaments are attached to a structure called the Z-line. The Z-line runs
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Low-dropout regulator From Wikipedia‚ the free encyclopedia Schematic of a low-dropout regulator A low-dropout or LDO regulator is a DC linear voltage regulator which can operate with a very small input–output differentialvoltage.[1] The advantages of a low dropout voltage include a lower minimum operating voltage‚ higher efficiency operation and lower heat dissipation.[2] The main components are a power FET and a differential amplifier (error amplifier). One input of the differential amplifier
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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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Chapter 3 VOLTAGE SAG/SWELL MITIGATION USING DYNAMIC VOLTAGE RESTORER (DVR) 3.1 Voltage Sag Mitigation Methods Power quality problems cannot be avoided for the consumers (end users) who are directly connected together by the interconnected systems. Therefore‚ consumers must protect themselves from PQ problems with mitigation or power conditioning devices. It is researched by EPRI that 90 % of all power quality problems are voltage sags in the USA and it is assumed that the European power network
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Lab# 1 The Node-Voltage Method of Circuit Analysis By: Abstract This report used KCL and Ohm’s law to calculate the node voltages and compare them to the measured node voltages after building the circuit. The calculations were obtained by hand using node analysis. The experiment was simulated on PSpice and the results were verified to hand calculations. The circuit was built in the lab and the results were measured with a digital multi-meter and compared to the calculated values‚ and
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