The following data were collected by measuring the range of motion (ROM) at vari
ID: 224708 • Letter: T
Question
The following data were collected by measuring the range of motion (ROM) at various joints with a goniometer. What conclusions can you make about this individual's flexibility? Identify sources of experimental error when measuring the range with a goniometer. What conclusions can you make about this individual's flexibility? Identify sources of experimental error when measuring the range of motion with a goniometer. To demonstrate muscle fatigue, a student held an 8-lb dumbbell in her hand and abducted her upper limb to that it was parallel the floor After 45 seconds, the was having trouble holding that position so the rotated her hand 90 degrees. By doing this she able to hold the dumbbell in position for an additional 20 seconds. Which of the following statements best explains why the could do this? a. The load was reduced. b. Different motor units were contracting while others were relaxing. c. The resistance to contraction was reduced. d. Muscles began to contract isotonically rather than isometrically. e. The change in position provided a greater range of motion at the shoulder.Explanation / Answer
Answer:
Threshold Stimulus - b) minimum stimulus required
Motor Unit - d) motor nerve fiber and all the muscle fibers it contains
Motor Unit recruitment - c) activation of increasing number of motors
Muscle flexibility - e) range of motion of a joint
Muscle Fatigue - a) condition of a muscle characterized by
10) Sources of experimental error when measuring the range of motion with at various joints with a goniometer:
1. variability in hand push or manual force, difficulty in moving body part, errors in alignment of goniometer, errors in indentification of landmarks.
11) rotated her hand 90° quiz
the load was reduced
different motor units were contracting while other were relaxing
the resistance to contraction was reduced
muscle begin to contract isotonically rather than isometrically
the change in position provided a greater range of motion of the shoulder
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