Muscle Physiology Purpose: What is the purpose of this exercise? Are there any safety concerns associated with this exercise? If so‚ list what they are and what precautions should be taken. Refer to the appendix of this manual if you need a tutorial on how to make graphs in Microsoft Excel®. Exercise 1: Muscle Twitch Data Table 1A: Muscle Twitch of Rectus Data Table 1B: Muscle Twitch of Lateralis Eye Muscle Quadriceps Femoris Time (milliseconds) Tension (kilogram-force)
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EXERCISE 2: Skeletal Muscle Physiology Student Name: Student ID#: ACTIVITY 1: The Muscle Twitch and the Latent Period Answers 1. The latent period of the skeletal muscle that was tested in this lab simulation was a. about 1 second. b. less than 1 msec. c. between 2-3 msec. d. variable‚ depending on the voltage that was applied to it. C. 2. True or False: Another name for a muscle cell is “myofibril.” False 3. The largest active force that could be generated in the muscle
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Chronic Obstructive Pulmonary Disease Abstract #1 Copd is at the apex of causes for mortality worldwide‚ with a greater incidence rate than ten years prior; systemic infections are the mainstay of the disease process. Periodontal disease has been vividly studied and the absolute foundation of the multifactorial process restrictive airways. The infection leads to inflammatory responses that perpetuates the diseased state via inflammatory mediators‚ and thus mediating copd. Counter arguments
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The Frog Life Cycle In Biology‚ we know the term metamorphosis which is the transformation process of animal’s body structure from the immature one to the adult form. This transformation process is done through cell growth and differentiation. This process usually happens in some insect’s life‚ such as butterfly. But there’s also amphibian‚ like frogs‚ which is also do metamorphosis in their life cycle. Frogs have some phases in their life cycle‚ part of the metamorphosis‚ which is interesting
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Ch 10 The unit of muscle structure that is composed of bundles of myofibrils‚ enclosed within a sarcolemma‚ and surrounded by a connective tissue covering called endomysium is a muscle fiber. The plasma membrane of a skeletal muscle fiber is called the Sarcolemma In a skeletal muscle fiber‚ Ca2+ is stored within the sarcoplasmic reticulum The bundle of dense regular connective tissue that attaches a skeletal muscle to bone is called a(n) tendon. In excitation-contraction coupling
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Textbook: Neural Reflexes * all neural reflexes begin with stimulus that activates sensory receptor * receptor sends info in form of AP through sensory neurons to CNS * CNS: integrating center that evaluates all incoming info and selects appropriate response * Initiates AP in efferent neurons to direct response of muscles or glands (effectors) * Negative feedback: * Feedback signals from muscle or joint receptors keep CNS continuously informed of changing body position
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What Is Resistance/Weight Training? Resistance/ weight training is any type of exercise that causes the skeletal muscles to contract and detract with the resistance of an outside force. This outside resistance can be produced in many ways‚ a few examples are: dumbbells‚ rubber exercise tubing‚ your own body weight‚ bricks‚ bottles of water‚ or any other object that causes the muscles to contract. A common name for this exercise is weight lifting. There are many different exercises that fall within
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LABORATORY REPORT (Click on the Save a Copy button on the panel above to save your report) Activity: Name: Instructor: Date: Twitch Contractions and Summation Katrelle Bond Rachel Waite November 7‚ 2014 Predictions Effect of Muscle Fiber Length on Contraction 1. As muscle fiber length increases contraction force increases. Effect of Stimulation Frequency on Contraction 2. As the frequency of stimulation increases‚ the force of contraction: increases. Materials and Methods Measurement of Threshold
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HISTOLOGY PURPOSE: The purpose of this exercise is to be able to identify and correctly name the major tissue types in the body‚ as well as identifying the subcatergories of tissue types while observing them through the microscope and diagrams‚ and be able to explain the location and function of the tissue types in the body. There are not any real safety concerns for this lab other than making sure correct use and care of the microscope is used. EXERCISE 1: EPITHEILIAL TISSUE Epithelial Tissue Observations
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REVIEW SHEET EXERCISE 2 Skeletal Muscle Physiology NAME: LAB TIME/DATE: Electrical Stimulation 1. Name each phase of a typical muscle twitch‚ and‚ on the following line‚ describe what is happening in each phase. a. b. c. 2. In Activity 2‚ how long was the latent period? __________ msec Describe the chemical changes that are occurring during this period. The Graded Muscle Response to Increased Stimulus Intensity 3. From Activity 3‚ describe the effect of increasing
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