a. a single muscle fiber plus all of the motor neurons that innervate it b. all of the motor neurons supplying a single muscle c. *a single motor neuron plus all the muscle fibers it innervates d. a pair of antagonistic muscles e. all of the muscles that affect the movement of any given joint 2. Which of the following is NOT associated with the thin filaments in skeletal muscle: a. tropomyosin b. *titin c. actin d. troponin e. nebulin 3. What produces the
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Skeletal Muscle Physiology Electrical Stimulation 1. Complete the following statements by filling in your answers on the appropriate lines below. A motor unit consists of a (a) and all the (b) it innervates. Whole muscle contraction is a(n) (c) response. In order for muscles to work in a practical sense‚ (d) is the method used to produce a slow‚ steady increase in muscle force. When we see the slightest evidence of force production on a tracing‚ the stimulus applied
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Muscle Tissue Introduction * Motion * Results from alternating contraction (shortening) and relaxation of muscles * Skeletal system * Provides leverage and a supportive framework for this movement * Myology – study of muscles Muscle Tissue * Alternating contraction and relaxation of cells * Chemical energy changed into mechanical energy Types of Muscle Tissue * Skeletal muscle – primarily attached to bones * Striated and voluntary * Cardiac
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members of the family Mustelidae which also includes weasels‚ martens‚ polecats‚ badgers‚ skunks‚ grisons and minks. Otters are placed in the sub-family Lutrinae (Khan W. A. et al.‚2010). Genus Lutrogale ;Smooth-coated otter (Lutrogale perspicillata) (Ogamba E.N. & Abowei J.F.N.‚2012) ( Figure 1) .The smooth otter is the largest otter in Southeast Asia that comment otter. It was named for its shorter‚ smoother coat than that of other otters with appears velvety and shiny. This otter is monogamous and usually
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Simple Stimulus “Habituation is a decrease in response to a stimulus after repeated presentations” (Cherry‚ 2013). For example‚ the sound of a telephone ringing may initially draw your attention‚ but as a person becomes more accustomed to the sound he or she pays less attention to the noise and the initial response becomes less. The diminished response is habituation. When I was younger I used to work in a customer service‚ call center setting. I got used to the phones ringing day in and day out
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Anatomy and Organization of Skeletal Muscle Skeletal Muscle Cells and Their Packaging into Muscles 1. Use the items in the key to correctly identify the structures described below. g; perimysium c; fascicle Key: a. b. c. endomysium epimysium fascicle fiber myofibril myofilament perimysium sarcolemma sarcomere sarcoplasm tendon 1. 2. 3. 4. 5. 6. 7. connective tissue ensheathing a bundle of muscle cells bundle of muscle cells contractile unit of muscle i; sarcomere d; fiber a; endomysium
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main purpose of the economic stimulus package was to prevent the re-emergence of the panic that gripped investors in 2008. It also aimed to restore trust in the finance industry by further limiting bonuses for senior executives for companies that received TARP funds (Recovery.gov). The $787 billion economic stimulus package was approved by Congress in February‚ 2009. The plan was to jumpstart economic growth‚ and save between 900‚000 - 2.3 million jobs. The economic stimulus bill allocated funds as follows:
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two different types of endoplasmic reticulum; the smooth ER and the rough ER. The smooth endoplasmic reticulum is plentiful in membrane bound enzymes (Koolman & Rohm‚ 2005). These enzymes catalyze incomplete reactions in lipid digestion and biotransformation (the chemical alteration of a substance within the body) (Koolman & Rohm‚ 2005). The smooth endoplasmic reticulum are the sections that have no ribosomes attached (Koolman & Rohm‚ 2005). The smooth ER can be found in both plant and animal cells
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1. Discuss the relationship between distribution of muscle fiber type and performance. How might exercise training modify or change a person’s fiber-type distribution? Skeletal muscles contain multiple fiber types that are distinguished by their different myosin ATPase speed‚ and the development of their SR. The two main fiber types are type I and type II fibers. Type II fibers have a faster ATPase and a more developed SR than type I fibers. Type II fibers are also part of a larger motor unit‚
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Christopher Couchell Muscle Physiology Purpose: The Purpose of this exercise is to understand how muscle twitch‚ contract and react to different activities. Exercise 1: Muscle Twitch A. What is a muscle twitch? A muscle twitch is the fasciculation ‚ or "muscle twitch"‚ is a small‚ local‚ involuntary muscle contraction and relaxation visible under the skin. B. According to the graphs‚ which muscle has the fastest twitch? Why? The lateral rectus eye muscle has the fastest twitch. It
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