Quiz #4 - HES 207 Quiz # 4 Matching. 41. _ Rotary component...

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Quiz # 4 Matching. 41. _________ Rotary component 42. _________ Direction (angle of pull) 43. _________ Magnitude of force 44. _________ Point of application Multiple choice: 45. If the angle of pull is less than 90 degrees: a. the rotary and nonrotary components are equal. b. the force is all rotary. c. the nonrotary force has a dislocating effect. d. the nonrotary force has a stabilizing effect. 46. All of the following statements are true EXCEPT: a. Internal forces can cause change in body shape. b. The number and size of fibers contracting affect the magnitude of muscular force. c. Technically the point of application of a muscle force vector is the point where the muscle attaches to the bone. d. The vertical (rotary) component of a force vector is perpendicular to the lever. 47. A centric force is a force that is through: a. the center of mass b. the axis of rotation c. the center of mass or the axis of rotation d. none of the above True = A, False = B 48. The length of the rotary and nonrotary components of a muscle force stay the same throughout the full range of motion of the joint. 49. Torque may be modified by either changing the force or the length of the moment arm. 50. The patella increases the angle of pull thus decreasing the rotary component of the quadriceps. B
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Quiz #4 - HES 207 Quiz # 4 Matching. 41. _ Rotary component...

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