Physiology 1 ch-4‚5 1. ___________ is a term which describes a membrane that allows only certain molecules to penetrate it. A. Selective permeable B. Permeable C. Porous D. Counter transport 2. Active Transport A. Utilizes energy B. Cannot transport molecules against a concentration gradient. C. Cannot be saturated D. Requires cofactors 3. The Rate of diffusion is influenced by A. The concentration gradient B. Membrane permeability C. Membrane surface area D. All of the choices are correct 4
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Muscular System: Muscle Metabolism 1. List the three roles of ATP in muscle contraction: 1. _Energize the power stroke of the myosin cross bridge. 2. _Disconnecting the myosin head from the binding site on actin at the conclusion of a power stroke. 3. _Energizing the calcium ion pump. 2. The potential energy in ATP is released when the terminal high-energy bond is broken by a process called hydrolysis. Write the end products of this process: ATP (+ H2O) (
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Organism Physiology Paper Deborah Chase Biology 101 Professor Y. Henry March 9‚ 2015 Organism Physiology Paper (Chimpanzees) Chimpanzees are hominid species of apes native to Africa and the closest related to humans which they share 95-98% of human DNA. Earlier research reports that the oldest known primates are about 65 million years old with the chimpanzees emerging about 20 million years ago. It is thought that the chimpanzee’s level of intelligence has allowed it to survive
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125 test 1A Student: ___________________________________________________________________________ 1. The breastbone is _____ to the vertebral column. A. anterior B. posterior C. superior D. inferior E. medial 2. The brain and the spinal cord are protected by A. a parietal layer. B. a visceral layer. C. mucous membranes. D. serous membranes. E. the meninges. 3. The system that exchanges carbon dioxide and oxygen and helps in speech is the _____ system‚ whereas the system that
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ANATOMY AND PHYSIOLOGY OF THE RESPIRATORY SYSTEM The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The respiratory system does this through breathing. When we breathe‚ we inhale oxygen and exhale carbon dioxide. This exchange of gases is the respiratory system’s means of getting oxygen to the blood. Respiration is achieved through the mouth‚ nose‚ trachea‚ lungs‚ and diaphragm. Oxygen enters the
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Michelle Aderholt Dwarfism 11/24/09 Sources Tortora‚ Gerald J.‚ and Bryan Derrickson. Principles of Anatomy and Physiology. 12th ed. United States of America: John Wiley and Sons‚ Inc‚ 2009. Print. “Dwarfism.” <http://kidshealth.org/Search01.jsp> Nov. 24‚ 2009. Kugler‚ Mary. “How many types of dwarfism are there?” <http://rarediseases.about.com/od/dwarfism/f/dwarfismtypes.htm> Nov. 24‚ 2009. “Dwarfism” Have you ever been somewhere and seen a person who is shorter than the
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HUMAN ANATOMY AND PHYSIOLOGY AN INTRODUCTION TO RESPIRATION In this essay we will consider a few major aspects of respiration. We shall first consider the interesting history of the study of respiration before moving on to our modern understanding of respiration. We will look at the structure and function of the respiratory system including the upper and lower respiratory tracts with a note on the control system. Secondly we will consider the physiology of respiration. Thirdly we will discuss some
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Activity 1 – The Muscle Twitch and Latent 1) Define the terms skeletal muscle fiber‚ motor unit‚ skeletal muscle twitch‚ electrical stimulus‚ and latent period. Skeletal Muscle Fiber: Skeletal muscle cells that are composed of hundreds to thousands of individual cells that produce muscle tension. These fibers are what move our bodies and generate muscle tension/force that enables us to have manual dexterity. Motor unit: consists of one motor neuron and all of the skeletal muscle fibers that it
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Anatomy & Physiology I Lecture 10: The Muscular System Prof. Magidah Alaudi‚ M.Sc. malaudi@gmail.com The Structural and Functional Organization of Muscles • About 600 human skeletal muscles • Constitute about half of our body weight • Three kinds of muscle tissue – Skeletal‚ cardiac‚ smooth • Specialized for one major purpose – Converting the chemical energy in ATP into the mechanical energy of motion; Contraction and Movement • Myology—the study of the muscular system The Functions of Muscles • Movement
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The action of ANS-related drugs on smooth muscle Introduction In the following experiment‚ the key objective is to compare the mechanical changes in tonic force by longitudinal smooth muscle after the addition of different concentrations of the drugs noradrenaline and acetylcholine. Peristalsis is the wave of muscle contractions that allow circular muscles to constrict the gut and longitudinal muscles to shorten it in an attempt to move the food bolus towards the rectum. A series of dilutions
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