When a skeletal muscle was passively stretched, it contracted reflexly. However, when the muscle was over stretched in this way it showed sudden cessation of contraction followed by relaxation. The following statements provided the possible explanation of these observations:

When a skeletal muscle was passively stretched, it contracted reflexly. However, when the muscle was over stretched in this way it showed sudden cessation of contraction followed by relaxation. The following statements provided the possible explanation of these observations:
A. The passive stretching of muscle caused stretching of muscle spindle B. The over stretching of muscle stimulated Golgi tendon organ C. Group 1b sensory nerve fibers were stimulated by stretching of muscle spindle D. Group 1b sensory nerve fibers stimulated-motor neurons that supplied the muscle from which these fibers arose. E. Group 1a sensory nerve fibers were connected to Golgi tendon organ. F. The stimulation of group 1a sensory fibers led to the production of IPSP on the motor neurons that supplied the muscle from which these fibers arose.
Which of the above statement(s) is/are correct?

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M.Sc. Entrance

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