EBK ANATOMY & PHYSIOLOGY: THE UNITY OF
7th Edition
ISBN: 8220102796409
Author: SALADIN
Publisher: YUZU
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Chapter 11, Problem 6TYR
Summary Introduction
Introduction:
The muscle is classified into three types- smooth muscle, skeletal muscle and cardiac muscle. Smooth muscle is a non-striated involuntary muscle whereas the skeletal muscle is a striated voluntary muscle.
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Muscle relaxation occurs when ________. a. calcium ions are actively transported out of the sarcoplasmic reticulum b. calcium ions diffuse out of the sarcoplasmic reticulum c. calcium ions are actively transported into the sarcoplasmic reticulum d. calcium ions diffuse into the sarcoplasmic reticulum
In relaxed muscle, the myosin-binding site on actin is blocked by ________. a. titin b. troponin c. myoglobin d. tropomyosin
Which of the following statements about the microscopic structure of smooth muscle fibers is incorrect?
a. smooth muscle cells lack myofibrils, sarcomere, and t-tubules
b. smooth muscle cells contain endomysium only
c. smooth muscles cells contain caveolae that sequesters calcium ions
d. all of the above
e. none of the above
Chapter 11 Solutions
EBK ANATOMY & PHYSIOLOGY: THE UNITY OF
Ch. 11.1 - Prob. 1BYGOCh. 11.1 - Prob. 2BYGOCh. 11.1 - Prob. 3BYGOCh. 11.1 - Prob. 1AYLOCh. 11.1 - Prob. 2AYLOCh. 11.1 - Prob. 3AYLOCh. 11.1 - Prob. 4AYLOCh. 11.2 - Prob. 4BYGOCh. 11.2 - Prob. 5BYGOCh. 11.2 - Prob. 6BYGO
Ch. 11.2 - Prob. 7BYGOCh. 11.2 - Prob. 1AYLOCh. 11.2 - Prob. 2AYLOCh. 11.2 - Prob. 3AYLOCh. 11.2 - Prob. 4AYLOCh. 11.2 - Prob. 5AYLOCh. 11.2 - Prob. 6AYLOCh. 11.2 - Prob. 7AYLOCh. 11.2 - Prob. 8AYLOCh. 11.2 - Prob. 9AYLOCh. 11.2 - Prob. 10AYLOCh. 11.3 - Prob. 8BYGOCh. 11.3 - Prob. 9BYGOCh. 11.3 - Prob. 10BYGOCh. 11.3 - Prob. 11BYGOCh. 11.3 - Prob. 1AYLOCh. 11.3 - Prob. 2AYLOCh. 11.3 - Prob. 3AYLOCh. 11.3 - Prob. 4AYLOCh. 11.3 - Prob. 5AYLOCh. 11.3 - Prob. 6AYLOCh. 11.4 - Prob. 12BYGOCh. 11.4 - Prob. 13BYGOCh. 11.4 - Prob. 14BYGOCh. 11.4 - Prob. 15BYGOCh. 11.4 - Prob. 1AYLOCh. 11.4 - Prob. 2AYLOCh. 11.4 - Prob. 3AYLOCh. 11.4 - Prob. 4AYLOCh. 11.4 - Prob. 5AYLOCh. 11.4 - Prob. 6AYLOCh. 11.5 - Prob. 16BYGOCh. 11.5 - Prob. 17BYGOCh. 11.5 - Prob. 18BYGOCh. 11.5 - Prob. 19BYGOCh. 11.5 - Prob. 1AYLOCh. 11.5 - Prob. 2AYLOCh. 11.5 - Prob. 3AYLOCh. 11.5 - Prob. 4AYLOCh. 11.5 - Prob. 5AYLOCh. 11.6 - Prob. 20BYGOCh. 11.6 - Prob. 21BYGOCh. 11.6 - Prob. 22BYGOCh. 11.6 - Prob. 23BYGOCh. 11.6 - Prob. 24BYGOCh. 11.6 - Prob. 1AYLOCh. 11.6 - Prob. 2AYLOCh. 11.6 - Prob. 3AYLOCh. 11.6 - Prob. 4AYLOCh. 11.6 - Prob. 5AYLOCh. 11.6 - Prob. 6AYLOCh. 11.6 - Prob. 7AYLOCh. 11.6 - Prob. 8AYLOCh. 11.6 - Prob. 9AYLOCh. 11.6 - Prob. 10AYLOCh. 11.6 - Prob. 11AYLOCh. 11.6 - Prob. 12AYLOCh. 11.7 - Prob. 25BYGOCh. 11.7 - Prob. 26BYGOCh. 11.7 - Prob. 27BYGOCh. 11.7 - Prob. 28BYGOCh. 11.7 - Prob. 29BYGOCh. 11.7 - Prob. 1AYLOCh. 11.7 - Prob. 2AYLOCh. 11.7 - Prob. 3AYLOCh. 11.7 - Prob. 4AYLOCh. 11.7 - Prob. 5AYLOCh. 11.7 - Prob. 6AYLOCh. 11.7 - Prob. 7AYLOCh. 11.7 - Prob. 8AYLOCh. 11.7 - Prob. 9AYLOCh. 11.7 - Prob. 10AYLOCh. 11.7 - Prob. 11AYLOCh. 11.7 - Prob. 12AYLOCh. 11.7 - Prob. 13AYLOCh. 11.7 - Prob. 14AYLOCh. 11.7 - Prob. 15AYLOCh. 11.7 - Prob. 16AYLOCh. 11 - Prob. 1TYRCh. 11 - Prob. 2TYRCh. 11 - Prob. 3TYRCh. 11 - Prob. 4TYRCh. 11 - Prob. 5TYRCh. 11 - Prob. 6TYRCh. 11 - ACh receptors are found mainly in a. synaptic...Ch. 11 - Prob. 8TYRCh. 11 - Prob. 9TYRCh. 11 - Slow oxidative fibers have all of the following...Ch. 11 - Prob. 11TYRCh. 11 - Prob. 12TYRCh. 11 - Parts of the sarcoplasmic reticulum called ______...Ch. 11 - Prob. 14TYRCh. 11 - Prob. 15TYRCh. 11 - Prob. 16TYRCh. 11 - Prob. 17TYRCh. 11 - Prob. 18TYRCh. 11 - A state of continual partial muscle contraction is...Ch. 11 - Prob. 20TYRCh. 11 - Prob. 1BYMVCh. 11 - Prob. 2BYMVCh. 11 - dys-Ch. 11 - iso-Ch. 11 - Prob. 5BYMVCh. 11 - Prob. 6BYMVCh. 11 - Prob. 7BYMVCh. 11 - temporo-Ch. 11 - Prob. 9BYMVCh. 11 - Prob. 10BYMVCh. 11 - Prob. 1TFCh. 11 - Prob. 2TFCh. 11 - Prob. 3TFCh. 11 - Prob. 4TFCh. 11 - Prob. 5TFCh. 11 - Smooth muscle lacks striations because it does not...Ch. 11 - Prob. 7TFCh. 11 - Prob. 8TFCh. 11 - Prob. 9TFCh. 11 - Prob. 10TFCh. 11 - Prob. 1TYCCh. 11 - Prob. 2TYCCh. 11 - Why would skeletal muscle be unsuitable for the...Ch. 11 - As skeletal muscle contracts, one or more bands of...Ch. 11 - ? Testing Your Comprehension
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- Smooth muscle cells have , whereasskeletal muscle fibers do not.a. sarcoplasmic reticulumb. tropomyosinc. calmodulind. Z discse. myosin ATPasearrow_forwardThe actual contractile units of muscle, called _____, extend from middle of one _____ to middle of next along length of myofibrils. A. T tubule, M line B. sarcoplasmic reticulum, H zone C. sarcomeres, I band D. sarcolemma, A bandarrow_forwardWhich of the following is not involved in the relaxation of smooth muscle fibers? a. calcium ion detachment from calmodulin b. active transport of calcium ions into sarcoplasmic reticulum c. dephosphorylation of myosin d. all of the above e. none of the abovearrow_forward
- During muscle contraction, calicum ions bind to A. Actin Filaments B. Tropomyosin C. Troponin D. Myosin Filamentsarrow_forwardContraction of muscles requires binding of various components of muscle fiber. Which of the following rows correctly matches two components of muscle fibre that bind with each other? Row Component of muscle fibre Component of muscle fibre A. Ca2+ myosin B. troponin myosin C. troponin tropomyosin D. actin Ca2+arrow_forwardContractions in _______ fibers are asynchronous while contractions in is _______ fibers are synchronous. a. smooth muscle; smooth muscle b. smooth muscle; skeletal muscle c. skeletal muscle; smooth muscle d. skeletal muscle; skeletal muscle e. none of the abovearrow_forward
- Which of the following statements relating to smooth muscle is true? a. single-unit smooth muscles contract rhythmically due to gap junctions b. multi-unit smooth muscles are arranged like skeletal muscle motor units c. visceral smooth muscles exhibit spontaneous action potentials d. multi-unit smooth muscles exhibit graded contractions in response to neural stimuli e. all of the abovearrow_forwardThe __________ phase in a myogram trace of muscle twitch registers the progressive increase in tension. a. latent period b. contraction period c. relaxation period d. a and b e. b and c __________ are neuroglia in the __________ responsible for surrounding the soma of neurons. a. Astrocytes; CNS b. Satellite cells; PNS c. Astrocytes; PNS d. Satellite cells; CNS e. a and barrow_forwardSmooth muscles differ from skeletal and cardiac muscles in that they ________. a. lack myofibrils b. are under voluntary control c. lack myosin d. lack actinarrow_forward
- Put the following skeletal muscle contraction events in the order that they occur: a. The myosin head swivels toward the center of the sarcomere. b. Calcium ions are released from the sarcoplasmic reticulum and bind to troponin. c. An action potential is propagated along the sarcolemma and transverse tubules. d. Myosin binds to actin, forming crossbridges. e. Myosin heads bind ATP molecules and release from actin. f. Tropomyosin molecules are moved off active sites on actin. g. ATPase splits ATP, providing the energy to reset the myosin head.arrow_forwardThe mechanism of muscle contraction is best explained by the sliding filament model. According to this model, thin ___i___ filaments slide over thick ___ii___ filaments.The statement given above is completed by information in row Row i ii A. myosin actin B. myosin myosin C. actin actin D. actin myosinarrow_forwardThe muscles of a professional marathon runner are most likely to have ________.a. 80 percent fast-twitch muscle fibers and 20 percent slow-twitch muscle fibersb. 20 percent fast-twitch muscle fibers and 80 percent slow-twitch muscle fibersc. 50 percent fast-twitch muscle fibers and 50 percent slow-twitch muscle fibersd. 40 percent fast-twitch muscle fibers and 60 percent slow-twitch muscle fibersarrow_forward
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