Which of the following statements characterizes an excitatory neuron? . -it sends an impulse back to the cell body of a neuron.

-it carry an impulse to the next neuron.

-it stops the passage of an impulse at a neuron.

The correct option is: IT HELPS CARRY AN IMPULSE BACK TO THE NEXT NEURON. There are two types of neurons, excitatory and inhibitoty neurons. Both serve to transmit impulse from one point to the other. Each neuron usually makes several connections with other cells.

Carbon dioxide is the correct answer

if you solve this you will know the answer