An injury to the radial nerve will inhibit the ability to the elbow.

The answer extends the elbow. The radial never severs the posterior upper arm (triceps) and runs down the arm to the wrists and fingers. As the  nerve terminates, it branches into deep and superficial sensory nerves.   Therefore injury to the nerve will also cause numbness in the fingers and wrist.

1. what is the relationship between the shape of an enzyme and the reactions they catalyze?

2. how does an enzyme inhibitor work?

separate your answers so i dont get confused : )

multiply it by 5 in order for you to understand i cant give an exact answer.