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Ch. 10 Muscle Tissue and Physiology
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All textbooksErin C. Amerman 2nd EditionCh. 10 Muscle Tissue and PhysiologyProblem 10.19a

Chapter 10, Problem 10.19a

List some of the functions of smooth muscle tissue.

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Hey, everyone. Let's take a look at this question. Together, smooth muscles play a crucial role in the following physiological functions except which is it? Answer choice. A peristalsis, answer choice B uterine contractions, answer choice, C respiration or answer choice D regulation of blood vessel diameter. Let's work this problem out together to try to figure out which of the following answer, choices do not involve smooth muscles. So in order to solve this question, we have to recall what smooth muscles are involved in to determine which of the following answer choices do not utilize smooth muscles. And we can recall that smooth muscles have involuntary contractions. So looking at or answer choices, which of the following involves those involuntary contractions. And we can see that in answer choice C it says respiration, which we know that respiration is related to the respiratory system, which we know that the respiratory system involves voluntary contraction. Since the respiratory system utilizes structures such as the diaphragm and in intercostal muscles, which are skeletal muscles. So answer choice C does not utilize smooth muscles. So answer choice C respiration is the correct answer. And all other answer choices are incorrect. Since peristalsis, uterine contractions and the regulation of blood vessel diameter involve smooth muscles. So they are incorrect. I hope you found this video to be helpful. Thank you and goodbye.
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Textbook Question

Which of the following is not likely to result from endurance training alone?


a. Increase in oxidative enzymes in the muscle fiber

b. Increased numbers of mitochondria

c. Hypertrophy of the muscle fibers

d. Increase in blood supply to the muscle fibers

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Textbook Question

Which of the following factors is/are responsible for muscular fatigue? (Circle all that apply.)


a. Accumulation of chemicals, including calcium and phosphate ions & increased blood flow to the muscle

b. Decreased availability of oxygen

c. Psychological and environmental factors

d. Depletion of key metabolic fuels, such as creatine phosphate

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Textbook Question

What is thought to cause excess postexercise oxygen consumption?

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Textbook Question

Which of the following best describes single-unit smooth muscle tissue?


a. The fibers function individually.

b. It is found in organs that require precise control of contraction.

c. It contains gap junctions that couple the fibers electrically.

d. The amount of tension produced varies with the number of muscle cells recruited.

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Textbook Question

How does a skeletal muscle fiber differ structurally from typical cells?

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Textbook Question

Some athletes will consume only protein for several days before a competition, which reduces the amount of glycogen in both the muscle fibers and the liver. What effect would this have on their ability to perform activities that require short, powerful bursts of activity? How would it affect their ability to perform endurance activities?

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