Essentials of Human Anatomy & Physiology (12th Edition)
12th Edition
ISBN: 9780134395326
Author: Elaine N. Marieb, Suzanne M. Keller
Publisher: PEARSON
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Chapter 6, Problem 14SAE
Summary Introduction
To review:
To define the neurotransmitter, neuromuscular junction, graded response motor unit, anaerobic glycolysis, tetanus, aerobic respiration, and muscle fatigue.
Introduction:
These terms are related to the activity of the skeletal muscles in the body.
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describe the events that lead to muscle contraction starting at the level of the neuromuscular junction. Make sure to use the terms: myosin, actin, calcium, troponin, tropomyosin, T tubules, SR, myosin head, ATP.
Which of the following is thought to be cause of muscular fatigue?
Decrease level of lactate within the muscle cell
Decrease level of extracellular potassium outside of muscle cell
Increased level of acetylcholinesterase in the synaptic cleft
Increase level of intracellular ATP within muscle cell
Increase level of phosphate within muscle cell
Describe in detail the events that happen at the neuromuscular junction leading to excitation-contraction coupling and muscle contraction.. Single line text.
Chapter 6 Solutions
Essentials of Human Anatomy & Physiology (12th Edition)
Ch. 6 - If you compare electron micrographs of a relaxed...Ch. 6 - After ACh attaches to its receptors at the...Ch. 6 - Your ability to lift that heavy couch would be...Ch. 6 - 4. Doing the pincer grasp is an ___________...Ch. 6 - 5. Which are ways in which muscle names have...Ch. 6 - 6. Which of the following muscles attach to the...Ch. 6 - Which of these thigh muscles causes movement at...Ch. 6 - 8. Which of the following insert on the...Ch. 6 - What is major function of muscle?Ch. 6 - Compare skeletal, smooth, and cardiac muscles in...
Ch. 6 - What two types of muscle tissue are striated?Ch. 6 - 12. Why are the connective tissue wrappings of...Ch. 6 - Prob. 13SAECh. 6 - Prob. 14SAECh. 6 - Prob. 15SAECh. 6 - Prob. 16SAECh. 6 - Prob. 17SAECh. 6 - Prob. 18SAECh. 6 - 19. List the 12 body movements studied in this...Ch. 6 - Prob. 20SAECh. 6 - If you were alternately contracting and relaxing...Ch. 6 - The sternocleidomastoid muscles help to flex the...Ch. 6 - Prob. 23SAECh. 6 - Name the prime mover of elbow flexion. Name its...Ch. 6 - Prob. 25SAECh. 6 - The hamstring and quadriceps muscle groups are...Ch. 6 - 27. What two-bellied muscle makes up the calf...Ch. 6 - 28. What happens to muscles when they are...Ch. 6 - Prob. 29SAECh. 6 - 30. Should a triathlete engage in aerobic or...Ch. 6 - Prob. 31SAECh. 6 - Prob. 32SAECh. 6 - Prob. 33CTCh. 6 - Prob. 34CTCh. 6 - Prob. 35CTCh. 6 - 36. When Eric returned from jogging, he was...Ch. 6 - 37. Chemical A binds and blocks acetylcholine...Ch. 6 - Kendra’s broken leg was in a cast for 8 weeks....
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- Define motor unit and muscle twitch, and describe the events occurring during the three phases of a muscle twitch.arrow_forwardDescribe the major events that occur when a muscle fiber contracts. Include all chemicals, structures and processes at a microscopic level starting at the neuromuscular junction and ending with the relaxation of the muscle fiberarrow_forwardIndicate which of the following are true. Chronically shortened muscles will lose sarcomeres in series in order to maintain ideal amounts of myofilament overlap. Contractile force is proportional to the length of a muscle. Muscle organ contraction is all or nothing. Muscle cells are surrounded by an endomysium. Actin is the thick filament and Z-lines are where the cross-bridges zig-zag to adjacent actin filaments. Muscles with fewer motor units are weaker, i.e., capable of less force. A nerve impulse, calcium, and ATP are necessary for muscle contraction. Tendons attach bones to bones and help to limit the range of motion at joints. Muscle tissue is very dynamic and will respond to chronic stress by becoming stronger (making more myofilaments), chronic contraction by becoming shorter (losing sarcomeres in series), and stretching by becoming longer (adding sarcomeres in series). Myofilaments are actually long strands of proteins.arrow_forward
- Describe the pattern of recruitment of muscle fiber types during aerobic activities of progressively greater intensity.arrow_forwardIn order to study and understand muscle diseases, one needs to have a good understanding of normal muscle function. Briefly outline the process of cross-bridge cycling in muscle contraction. Be sure to highlight the role of Ca2+ and ATP/ADP in the process.arrow_forwardSketch a myogram of a single muscular twitch, and identify the latent period, period of contraction, and period of relaxation.arrow_forward
- Explain the types of movements facilitated by slow oxidative,fast oxidative, and fast glycolytic muscle fibers.arrow_forwardCompare and contrast the effects of aerobic and resistance exercise on skeletal muscles.arrow_forwardDiscuss the structure of a muscle fiber indicating the location of the following:epimysium, perimysium, myofibrils and sarcolemma.arrow_forward
- Explain the sliding filament theory of muscle contraction, including the following parts; thich (myosion) filaments, thin (actin) filaments, myosin heads, tropomyosin, troponin, ATP, active sites, calcium.arrow_forwarddescribe the stages of a muscle twitch;arrow_forwardExplain what occurs during muscle atrophy and musclehypertrophy.arrow_forward
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