The following are types of neural pathways - Scottish Highers Human Biology - Question 14 - 2015

To determine which neural pathways involve nerve impulses being sent back through a circuit of neurons, we need to analyze each option:

1. Diverging Pathway: This type of pathway carries impulse information away from a single neuron to multiple neurons. It does not send nerve impulses back through a circuit.

2. Converging Pathway: This pathway involves multiple neurons converging onto a single neuron, but it does not create a closed circuit for impulse returning.

3. Reverberating Pathway: This is the key type that involves impulses being sent back through the circuit. In this pathway, the neuron can send impulses back through the network, allowing for sustained stimulation.

Based on this analysis, only the Reverberating pathway (item 3) is associated with sending nerve impulses back through a circuit of neurons.

Thus, the correct answer to the question is A) 3 only.