Question

1. an impulse from your finger tip travels to the brain for interpretation. to reach the brain the impulse travels through a neuron and across the synapse, respectively, by

a. hormones and sodium ion transfer
b. hormones and potassium ion transfer
c. chemical transmission and electrical means
d. electrical means and chemical transmission
hint: respectively, means to put in order as listed in the question. the first correct response must apply to, through the neuron, and not across the synapse.

Explanation:

Nerve impulses travel along neurons as electrical signals (action - potentials). At synapses, the signal is transmitted from one neuron to another via chemical neurotransmitters. So, the impulse travels through a neuron by electrical means and across the synapse by chemical transmission.

Answer:

D. electrical means and chemical transmission