Could some one check my answers you! not sure if right 1. a neuron fiber that sends a signal from your hand to your brain is called a a. axon < < < < < < b. cell body c. mitochondriond. d. dendrite 2. at approximately what age does nerve conduction achieve maximum capacity? a. 5 < < < < < b.10 c.20 d.30 3.insulin is to glucagon as a. wet is to dry b. walking is to running c. morning is to afternoon d. a key is to lock < < <