As Jim lifts a weight heavier than he has ever lifted before, he suddenly drops the weight with a stunned look on his face. With
a nervous laugh, he winks at the girl again, but she turns and walks away. Which of the following most likely happened to Jim
a)The stimulation of the Golgi tendon organ increased action potentials in the sensory neuron, which increased action potentials in an inhibitory alpha motor neuron.
b)The increased action potentials from the Golgi tendon organ caused increased firing of the gamma motor neuron innervating the biceps.
c)The increased contractions of the biceps brachii increased the firing of the neuron innervating the muscle spindle, which caused the muscle to relax.
d)The stimulation of the Golgi tendon organ increased action potentials in an inhibitory interneuron in the ventral horn of the spinal cord.
1 answer:
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