Could some one please check my answers thank 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 <<<