REVIEW SHEET EXERCISE 2 Skeletal Muscle Physiology NAME: Jasmine Young LAB TIME/DATE: 1. Define each of the following terms: • motor unit - A motor unit consists of a motor neuron and all of the muscle fibers it innervates. • twitch - Skeletal Muscle twitch is the mechanical response to a single action potential. It has three phases known as the latent‚ contraction‚ and relaxation phase. • threshold - the threshold is the minimal stimulus needed to cause a depolarization of the muscle plasma membrane
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Exercise 12: Serological Testing: Activity 1: Using Direct Fluorescent Antibody Technique to Test for Chlamydia Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Which of the following has an epitope? You correctly answered: b. an antigen 2. Chlamydia trachomatis is You correctly answered: c. a bacterium that reproduces inside its host cell. 3. The infectious form of Chlamydia that is spread from person to person is the You correctly answered:
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PHYSIOLOGICAL & MECHANICAL PROPERTIES OF SKELETAL MUSCLE USING FROG GASTROCNEMIUS AIM The purpose of this experiment was to demonstrate the physiological as well as mechanical properties of skeletal muscle using the gastrocnemius muscle of a frog by exploring five different investigations namely the single twitch‚ the graded response‚ the relationship between muscle length and tension‚ muscle tetanus‚ and muscle fatigue. These individual experiments aim to explore the way muscles can contract when an electrical
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English 101 Mr. B 17 March 2013 Do you exercise? Obviously exercise is important and has many benefits. When the word exercise is mentioned‚ what comes to mind? Some people believe that exercise is more of a health and heart thing. Some believe exercise is more for appearance and the way one looks. While others believe exercise is for psychological reasons. Exercising is important for a lot of things dealing with the body. Most all benefits of exercise are helpful for the body and health.
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Frog Skeletal Muscle The aim of this experiment is to explore the basic physiological principles of skeletal muscle using the isolated frog (Rana pipiens or Xenopus laevis) gastrocnemius muscle. Students will dissect a double-pithed frog. Then‚ they will connect the muscle to the Force Transducer to measure twitch recruitment‚ effect of stretch‚ muscle summation‚ muscle tetanus‚ and muscle fatigue. Written by staff of ADInstruments. Experiment Contents 1. Instructor’s Reference (this
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FROG MUSCLE PHYSIOLOGY 2) What was the smallest voltage required to produce max contraction? What proportion of the muscle fibers in the muscle do you think were contracting to produce this maximal response? Muscle fibers act in response to isolated stimuli in an all or none fashion. However‚ a muscle organ‚ such as the gastrocnemius muscle‚ is composed of many individual muscle fibers. It is known that all of the fibers in a muscle do not have the same threshold and that a stimulus applied to
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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 5: Simulating Active Transport Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The movement of sodium and potassium maintained by the Na+ -K+ pump You correctly answered: e. requires energy and is against a concentration gradient. 2. The sodium-potassium pump is classified as a(n) You correctly answered: a. antiporter. 3. The sodium-potassium pump moves _____ sodium ions and _____ potassium
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I. Types of Muscles a. Skeletal i. Striated ii. Uses intracellular calcium to contact iii. Big cylindrical cells iv. Multi-nucleated v. Voluntary vi. Location: attached to the bone vii. Used for locomotion b. Cardiac i. Involuntary ii. Uni-nucleated iii. Striated iv. Location: walls of heart v. Used to propel blood vi. Uses extracellular calcium c. Smooth i. Involuntary ii. Location: Walls of hallow organs iii. Non-striated iv. Uses extracellular calcium v. Spindle shaped cells
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Name: Ashlei Sickles Exercise 6: Cardiovascular Physiology: Activity 1: Investigating the Refractory Period of Cardiac Muscle Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The cardiac muscle is capable of which of the following? You correctly answered: c. autorhythmicity 2. Phase 2 of the cardiac action potential‚ when the calcium channels remain open and potassium channels are closed‚ is called the You correctly answered: a. plateau phase
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of three different muscle types cardiac‚ smooth‚ and skeletal muscle. For this particular experiment the primary focus was skeletal muscle‚ which accounts for about 36% to 45% of total body weight and involves the integration of more than 600 different muscles (WordPress‚ 2006). Skeletal muscle contains many unique properties such as; elasticity and extensibility which allows a muscle to be stretched and return to its original state when not in use. Additionally skeletal muscles also contain a property
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