Chapter 9 CWP Terms Practice Quiz

Chapter 9 CWP Terms Practice Quiz - Chapter 9 CWP Terms...

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Chapter 9 CWP Terms Practice Quiz the continuous and passive partial contraction of the muscles. It helps maintain posture, and it declines during REM sleep. In terms of skeletal muscle, both the extensor and flexor muscles, under normal enervation, maintain a constant tone while "at rest" that maintains a normal posture. a special type of smooth ER found in smooth and striated muscle. It contains large stores of calcium, which it sequesters and then releases when the cell is depolarized. This has the effect of triggering muscle contraction. movement characterized by alternate contractions of circular and longitudinal muscles; used to transport materials in digestive tracts or for locomotion For skeletal muscles, the force exerted by the muscle is controlled by varying the frequency at which action potentials are sent to muscle fibers. Action potentials do not arrive at muscles synchronously, and during a contraction some fraction of the fibers in the muscle will be firing at any given time. This is known as frequency ___. the end of the muscle attaching to the relatively fixed bone of its joint. the soft tissue component of the connective tissue system that permeates the human body. It interpenetrates and surrounds muscles, bones, organs, nerves, blood vessels and other structures. A hemoprotein that receives oxygen from haemoglobin and stores it in the tissues until needed. is a single-chain globular protein of 153 amino acids, containing a heme (iron-containing porphyrin) prosthetic group in the center around which the remaining apoprotein folds. It is the primary oxygen-carrying pigment of muscle tissues. a classification used to describe a muscle that acts in opposition to the specific movement generated by an agonist and is responsible for returning a limb to its initial position. Muscle protein composed of two heavy and four light protein chains which are arranged in a long tail with two heads at one end. The heads hydrolyze ATP and, when properly signaled, uses the energy to walk past an adjacent protein molecule to which it has bound to shorten the muscle. applies to neurons located in the central nervous system (CNS) that project their axons outside the CNS and directly or indirectly control muscles. It is often synonymous with efferent neuron. a description of a process used by muscles to contract which involves the "paddling" of a flexible head of one myofilament while attached to a second, pulling them past each other. the end of the muscle attaching to the freely moving bone of its joint. 1. the gradual increase to a maximum in a reflex when a stimulus of unaltered intensity is prolonged. 2. in audiology, an abnormally large increase in the perceived loudness of a sound caused by a slight increase in its intensity. 3. in muscle physiology, the orderly increase in number of activated motor units with increasing strength of voluntary muscle contractions. a deep invagination of the plasma membrane found in skeletal and cardiac
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This note was uploaded on 06/11/2010 for the course BIOLOGY A&P1 taught by Professor Lankow during the Spring '10 term at Mayville.

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Chapter 9 CWP Terms Practice Quiz - Chapter 9 CWP Terms...

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