Great job once again on answering the question about how muscle action relates to the movement. I think maybe I took it to the extreme‚ I went on about agonist‚ synergist‚ and antagonist muscles. I wasn ’t sure if I should add the levers too. It appears as though you explained every type of muscle movement and gave an example of each. I went into flexion at the elbow and discussed that the agonist is the main muscle mover‚ the antagonist does the opposite‚ and the synergist is the helper. However
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Name: lily Exercise 6: Cardiovascular Physiology: Activity 1: Investigating the Refractory Period of Cardiac Muscle Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 07/10/13 page 1 Experiment Results Predict Question: Predict Question 1: When you increase the frequency of the stimulation‚ what do you think will happen to the amplitude (height) of the ventricular systole wave? Your answer : a. The amplitude will increase. Predict Question 2: If you deliver multiple
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voltage? What has happened to the muscle at this voltage? 5. An individual muscle fiber follows the all-or-none principle—it will either contract 100% or not at all. Does the muscle we are working with exhibit the all-or-none principle? Why or why not? Yes be Multiple Stimulus Activity 4: Treppe 1. What do you observe? The Trace rise and fall‚ while the force in grams increased. Activity 5: Summation 1. What is the active force of the contraction? 1.83 gms 2. What is the active
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Chapter 9: Muscles and Muscle Tissue‚ Lecture Outline: I. Overview of Muscle Tissues (pp. 276–278; Table 9.1) A. Types of Muscle Tissue (p. 277; Table 9.1) 1. Skeletal muscle is associated with the bony skeleton and consists of large cells that bear striations and are under voluntary control. 2. Cardiac muscle occurs only in the heart and consists of small cells that are striated and under involuntary control. 3. Smooth muscle is found in the walls of hollow organs and
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efficiency * Muscle fiber type * Higher efficiency in muscles with greater
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Bio 201: Human Anatomy and Physiology I Muscle Physiology Protocol I. Goals for this lab A. To increase your understanding of muscle physiology - tonus‚ motor unit recruitment and fatigue. B. Learn how to conduct and analyze an EMG (electromyogram) C. To gain more experience with the scientific method‚ experimental design‚ making predictions‚ critical analysis of results‚ and interpretation of your results. II. Introduction Human skeletal muscle consists of hundreds of individual
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Lab #3: Isotonic contraction and the effect of load on skeletal muscles Abstract The job of the motor nervous system is to control certain elements in muscles simultaneously to ultimately produce movement. Movement of the body is the result of specialized cells directly associated with skeletal muscle. Skeletal muscles are voluntary muscle and must contract before movement can occur. We know the muscle team moving the arm is formed at the biceps and triceps. Biceps can bend the elbow‚ but
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Muscle Fiber contractions for our purposes begins with the arrival of action potential (action potential- is an electrical current) at the end of the axon terminal (axon terminal- the swollen distal end of the motor neuron axon). When the action potential reaches the axon terminal the action potential causes the voltage- gated calcium ion channels to open allowing calcium to flow in from extracellular fluid. The presence of calcium in the axon terminal causes synaptic vesicles (synaptic vesicles-
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Skeletal Muscle Physiology Activity 1 1. Skeletal muscle fiber- long‚ cylindrical cell with multiple oval nuclei arranged just beneath the sarcolemma Motor unit- all of the muscle cells controlled by a single motor neuron Skeletal muscle twitch- a single stimulus-contraction-relaxation cycle in a skeletal muscle Electrical stimulus- uses an electrical current to cause a single muscle or a group of muscles to contract Latent period- the time between the stimulation of a muscle and the start
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Muscle contractions and stimulations play a very integral part in the functioning of an organism and muscles are especially function for force production and motion all this is highly influenced by specific temperatures‚ electrical impulses‚ proteins and enzymes and other factors that occur whether on the inside or the external environment of an organism (Amitrano & Tortora‚ 2012). Proteins as defined by Cheeke 2010‚ are molecules that are made up of amino acids and are responsible for almost all
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