EBK ANATOMY & PHYSIOLOGY: THE UNITY OF
7th Edition
ISBN: 8220102796409
Author: SALADIN
Publisher: YUZU
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Chapter 11, Problem 8TYR
Summary Introduction
Introduction:
The smooth muscle is an involuntary muscle that lining the walls of hollow organs. The smooth muscle is classified into two types-multiunit smooth muscle and single unit smooth muscle.
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Single-unit smooth muscle cells can stimulate each other because they havea. a latch-bridge.b. diffuse junctions.c. gap junctions.d. tight junctions.e. cross-bridges.
Which of the following describes a similarity between cardiac and smooth muscle cells?a. An action potential always precedes contraction.b. The majority of the Ca21 that activates contraction comes from theextracellular fluid.c. Action potentials are generated by slow waves.d. An extensive system of T-tubules is present.e. Ca21 release and contraction strengths are graded
Single-unit smooth muscle cells can stimulate each other because they have:|- a. pacemakers. b. diffuse junctions. c. gap junctions. d. tight junctions. e. calcium pump
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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- 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_forwardWhen a skeletal muscle fiber undergoes a concentric isotonic contraction,a. M lines remain the same distance apart.b. Z lines move closer to the ends of the A bands.c. A bands become shorter.d. I bands become wider.e. M lines move closer to the end of the A band.arrow_forwardWhich of the following statements is not characteristic of smooth muscles? a.Myosin phosphatase is required for contraction. b.They are able to conduct graded depolarizations. c.They can enter a latch state. d.They can produce graded contractions in response to graded depolarizations.arrow_forward
- 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 abovearrow_forwardThe functions of tropomyosin in skeletal muscle include A. releasing calcium ions after initiation of contraction. B. generating ATP which it passes to the contractile mechanism. C. binding to myosin during contraction. D. acting as a relaxing protein at rest by covering up the sites where myosin binds to actin. E. sliding on actin to produce shortening.arrow_forwardThe cross bridges of the sarcomere in skeletal muscle are made up of A. myelin. B. tropomyosin. C. myosin. D. actin. E. myoglobulin. F. troponin.arrow_forward
- Before a skeletal muscle fiber can contract,Ca2+ must bind toa. calsequestrin.b. calmodulin.c. the myosin head.d. troponin.e. actinarrow_forwardCompared with skeletal muscle, visceral smooth muscle a. has the same ability to be stretched. b. loses the ability to contract forcefully when stretched. C. maintains about the same tension, even when stretched. d. cannot maintain long, steady contractions. e. can accumulate a substantial oxygen deficitarrow_forwardPut 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_forward
- Skeletal muscle and cardiac muscle are similar in that both types of muscle a. have cells that branch. b. contain intercalated discs. c. are under involuntary control. d. are striated.arrow_forwardCrossbridges that form during muscle contraction are a bond between: A. Myoglobin and Troponin B. Hemoglobin and Glycogen C. Actin and Myosin D. Toponin and Tropomyosinarrow_forwardAll of the following characteristics apply to skeletal muscle except a. They are striated. b. They are multinucleated. c. They are voluntary. d. They contain intercalated discs. e. They are attached to the skeleton by means of tendons.arrow_forward
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