1. Chapter 6 Review Questions

2. 1. Acetylcholine is _______: a.) an ion pump activated when a muscle contracts b.) a source of energy for muscle contraction c.) a component of thick myofilaments d.) a neurotransmitting chemical

3. 2. Which of the following contains smooth muscle cells? a.)Lung b.) Heart c.) Inner Ear Canal d.) Stomach

4. 3. Which of the following is placed in the proper order from largest to smallest? a.) myofilament, myofibril, fiber, fascicle b.) fiber, myofibril, myofilament, fascicle c.) fascicle, fiber, myofilament, myofibril d.) fascicle, fiber, myofibril, myofilament

5. 4. A motor unit consists of_______: a.) a skeletal muscle and all of the neurons that supply it b.) a nerve and all of the skeletal muscles supplied by it c.) a neuron and all of the skeletal muscle fibers that it stimulates d.) all of the skeletal muscles that accomplish a single movement

6. 5. The action of the __________ opposes or reverses movement of a prime mover. a.) Agonist b.) Antagonist c.) Synergist d.) Fixator

7. 6. Which process provides energy during 30 seconds periods of intense activity? a.) creatine phosphate formation b.) aerobic respiration c.) phosphorylation d.) anaerobic glycolysis

8. 7. Which body movement shows an increase in the joint angle for the elbow? a.) flexion b.) extension c.) abduction d.) adduction

9. 8. The ions released inside the muscle cell during action potential generation are____: a.) Calcium ions b.) Oxygen ions c.) Sodium ions d.) Magnesium ions

10. 9. Which of the following is NOT a pathway for muscles to regenerate ATP? a.) CP + ADP b.) Anaerobic Glycolysis c.) Sodium / Potassium Pump d.) Aerobic Respiration

11. 10. Which movement is occuring when a limb is brought towards the body’s midline? a.) flexion b.) extension c.) abduction d.) adduction

12. 11. Paralysis of which of the following would make it impossible to bend your knee? a.) Biceps Femoris b.) Pectoralis Major c.) Trapezius d.) Brachialis

13. 12. When “cupping the hands” to collect water in them, you must _________ them. a.) Flex b.) Extend c.) Pronate d.) Supinate

14. 13. Shaking your head to say “No”, involves what body movement? a.) Circumduction b.) Rotation c.) Flexion d.) Extension

15. 14. A group of several sheathed muscle fibers wrapped by a coarse fibrous membrane is___: a.) a grouping b.) a fascicle c.) a fiber d.) a motor unit

16. 15. The part of the neuron that extends from the body to interact with a muscle cell is the: a.) dendrite b.) fascicle c.) axon d.) synapse

17. 16. Which of the following is found only in the heart? a.) Skeletal muscle tissue b.) Smooth muscle tissue c.) Cardiac muscle tissue

18. 17. Which of the following is multi-nucleated? a.) Skeletal muscle tissue b.) Smooth muscle tissue c.) Cardiac muscle tissue

19. 18. This occurs when oxygen is not taken in fast enough to keep up with the demands of exercise. a.) Muscle Fatigue b.) Aerobic Respiration c.) Muscle Tone d.) Oxygen Debt

20. 19. Small, fluid filled sacs that act to decrease friction within joints are called _________. a.) Bursae sacs b.) Synovial sacs c.) Tendons d.) Ligaments

21. 20. Which of the following is found in the walls of hollow organs? a.) Skeletal muscle tissue b.) Smooth muscle tissue c.) Cardiac muscle tissue

22. 21. Which of the following is voluntary in the nature of its contraction? a.) Skeletal muscle tissue b.) Smooth muscle tissue c.) Cardiac muscle tissue

23. 22. The ________ attaches the muscle to the less movable bone during a movement. a.) ligament b.) origin c.) insertion d.) body

24. 23. The protein that forms thick filaments within the sarcomere is called ______. a.) Mytin b.) Actosin c.) Myosin d.) Actin

25. 24. The _______ bears a major responsibility of a particular movement. a.) Antagonist b.) Prime mover c.) Synergist d.) Fixator

26. 25. Which of the following is a lower body skeletal muscle? a.) Pectoralis Major b.) Latissimus Dorsi c.) Temporalis d.) Peroneus Longus