What would occur if neurons simultaneously stimulated both the biceps and triceps muscles to contract?

When the biceps contract, these two bones remain stationary. ... The muscle on the back of the upper arm is the triceps. A simple demonstration will illustrate. ... They cannot move, because both sets of muscles are contracting at the same time. ... A motor neuron (nerve cell) stimulates all of the skeletal muscles within a motor

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answer///cannot be totally predicted;