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Muscle Physiology Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Which of the following ions stimulates neurotransmitter secretion?

Question 2 2. Which of the following regulates smooth muscle but not striated muscle contraction?

Question 3 3. How does shivering thermogenesis aid in the homeostatic regulation of body temperature?

Question 4 4. How is the energy from ATP hydrolysis used?

Question 5 5. All of the following terms describe a type of muscle tissue EXCEPT _____.

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Question 6 6. An isolated muscle is stimulated with increasing stimulus strength. Stimuli of 10, 15 and 20 mV produced no response, while 25 mV produced a small contraction. Which of the following is the threshold stimulation?

Question 7 7. Henry is getting ready to kick a field goal. When his thigh muscle contracts to straighten his knee right before the kick, this is known as _____ contractions?

Question 8 8. During which stage of the cross-bridge cycle does the sarcomere shorten?

Question 9 9. Which structure is responsible for carrying the excitatory neural impulse from the sarcolemma to the sarcoplasmic reticulum?

Question 10 10. Which proteins form a cross-bridge, causing muscular contraction?

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Question 11 11. Within the individual myofibril of the muscle cell are repeating units that run end-to-end along the length of the myofibril. What are these units called?

Question 12 12. Consider a running muscle composed of 40% fast, 40% slow, and 20% intermediate fibers. What effect would repeated distance running have on this muscle?

Question 13 13. Which of the following is NOT characteristic of fast muscle fibers?

Question 14 14. Which type, or types, of muscle tissue innervate the somatic nervous system?

Question 15 15. How does the sarcomere contribute to the functionality of skeletal muscle?

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Question 16 16. What happens if a muscle's sarcomeres shorten?

Question 17 17. Which of the following structures are optimally arranged to maximize contraction?

Question 18 18. Which of the following is a neuromuscular disease resulting from destruction of the acetylcholine receptor?

Question 19 19. Which of the following occurs first in a single cross bridge cycle, beginning with the high-energy/attached stage?

Question 20 20. If a muscle is held at a shortened resting length, then why is tension development compromised?

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Question 21 21. Skeletal muscle contraction without muscle shortening is responsible for which of the following?

Question 22 22. Which of the following proteins makes up the thin filaments and binds to the ends of the sarcomere at the Z lines?

Question 23 23. Which of the following would be an accurate comparison of a small motor unit to a large motor unit?

Question 24 24. Which of the following would be the smallest in diameter?

Question 25 25. What is the functional unit of a striated muscle?

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Question 26 26. If a person is undergoing strength conditioning, then what will happen to their muscles?

Question 27 27. In a neuromuscular junction, which of the following is considered the pre-synaptic cell?

Question 28 28. What structure attaches a skeletal muscle to a bone?

Question 29 29. Which of the following is NOT true of a maximum contraction?

Question 30 30. Which of the following is composed of muscle tissue surrounding a hollow organ?

Muscle Physiology Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. You will lose your work if you close or refresh this page. Good luck!

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