MCQOPTIONS
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| 1. |
A stronger muscle contraction occurs when the brain _______. |
| A. | Send signals to larger number of motor units to contract. |
| B. | Activates muscle cells more quickly. |
| C. | Activates the motor units of the muscle one at a time. |
| D. | Sends nerve impulses to the muscle one at a time instead of in bursts. |
| Answer» B. Activates muscle cells more quickly. | |