The Muscular System: Skeletal Muscle Tissue 1. Fill in the characteristics of the three muscle types: Muscle Type Cardiac Shape of cell Skeletal branching chains of cells single‚ long cylindrical # of nuclei 15 um in diamter‚ small Striations yes‚ has myofibrils and sarcomers Control involuntary 100 um in size‚ big Smooth single‚ spindle shape cells 2-10 in diameter‚ medium yes‚ presences of myofibrilsno presence of myofibrils and sarcomeres voluntary
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In this lab‚ we are measuring the EMG amp (mV)‚ or electrical activity‚ from action potentials produced from muscle contractions in order to gain an indication of the number of active motor units used in the contraction. This is done by adding more load to the muscle or force. There is examining of the EMG amp produced from a twitch at varying levels of muscle force and EMG amp from muscles when more load is placed on them. During the experiment‚ we set up the equipment‚ electrodes and software
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Lab 4 Quiz 1. Enzymes and what is their function? a. Enzyme: biological catalysts that regulate chemical reactions that occur in cells. Responsible for things such as converting food to energy‚ replace old damaged tissues‚ disposal of cellular waste products. Are responsible for lowering the activation energy. 2. Most enzymes are proteins with three-dimensional shapes determined by their amino acid sequence. 3. Substrate – is a reactant molecule that binds to the highly specific active site
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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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Purpose: The purpose of this lab is to determine the substance that are required in order for muscle to contract. We are experiencing this contraction by having three different solutions which contains their own disparate chemicals inside. Hypothesis: Solution A: 0.25% ATP solutions in distilled water; Base on muscle contraction mechanism which we know the force that generating cycle required is indeed of a lot of energy in the form of ATP‚ but there are additional solutions; KCl‚ MgCl2 which
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2/14/2012 Anatomy and Physiology Muscle Grip Strength Lab Report Introduction: Skeletal muscle is a form of striated muscle tissue existing under the voluntary control of the somatic nervous system (Medscape 1). Skeletal muscle is part of the three big muscle types‚ it is connected to bones by tendons (Medscape 1). Muscle grip strength is significant to an individual because it helps the person know the ability of muscle power and force that they have in their
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Explanation: Page 121 Points Received: 2 of 2 Comments: 2. Question : (TCO 4) The principal issue to be resolved in cases involving alleged negligence is usually: Student Answer: the amount of the damages suffered by plaintiff. whether to impose punitive damages on defendant. the level of care exercised by the CPA. whether defendant was involved in fraud. Instructor Explanation: Page 119 Points Received: 2 of 2 Comments: 3. Question : (TCO 4)
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BI309 Lab-2 Name of student: Anisa Dreunibakarua ID #: S11033198 Title: Effect of Temperature and Stimuli on Simple Muscle Twitch. Introduction: Skeletal muscle is a type of striated muscle that is attached to skeleton to facilitate movement by applying force to bones and joints through contraction. Skeletal muscle generally contract voluntarily when stimulated by the nerve‚ although they can also contract involuntarily at times. Muscle action is controlled by the Nervous System
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Wiley Plus Wk 2 Ex & Prob ACC/291 August 6‚ 2012 Wiley Plus Wk. 2 Ex & Prob E8 – 3 Date | Account Titles and Explanation | Debit | Credit | 31 – Dec. | Bad Debts Expense Accounts receivable-Fell | 1‚400 | 1‚400 | | | | | 31 – Dec. | Bad Debts Expense (840‚000 – 30000)*1% Allowance for Doubtful accounts | 8‚100 | 8‚100 | | | | | 31 – Dec. | Bad Debts Expense Allowance for Doubtful Accounts (120‚000*10%)-2100 | 9‚900 | 9‚900 | | | | | 31 – Dec.
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------------------------------------------------- Top of Form Grade Details | Page: | 1 2 | 1. | Question : | (TCO F) Some companies use process costing and some use job-order costing. Which method a company uses depends on its industry. A number of companies in different industries are listed below: i. Custom boat builder ii. Frozen cranberry juice processor iii. Concrete block manufacturer iv. Winery that produces a number of varietal wines v. Aluminum refiner that makes aluminum
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