_______ carry nerve impulses between neurons--for example, from sensory neurons to motor neurons.what is in blank?!! and please also explain the answer.

Expert Answers
ako6777 eNotes educator| Certified Educator

I believe the answer to your question is the synapse. "In the nervous system, a synapse is a structure that permits a neuron to pass an electrical or chemical signal to another cell."  Typically a synapse is the space between the axon and the dendrite. It is within the space that a neurotransmitter is released.  The neurotransmitter carries messages from one neuron to another.

There are two different kinds of synapses:

  1. Chemical Synapse-a neurotransmitter is released to carry messages between neurons.
  2. Electrical Synapse-are channels that are capable of passing electrical current.  " Electrical synapses are often found in neural systems that require the fastest possible response, such as defensive reflexes."
blueexile2877 | Student

The two answers above are very incorect. The Neurotransmitters travel across the gap and bind to receptormmolecules on the dendrite of the next neuron. This stimulates a nerve impulse in the receiving neuron.  Simple as that.

terepark1 | Student

Two answers above are correct. Synapse is the junction where one neuron can transfer an impulse to another structure. For a nerve impulse to be carried along at a synapse, it must cross the gap between the axon & the next structure. The axon tips release chemicals that carry the impulse across the gap.

krishna-agrawala | Student

The correct answer could be 'synapse, as mentioned in post above, or it could be 'neurotransmitter'.

synapse is the structure where any branch of one neuron transmits a nerve impulse to a branch of another neuron, while neurotransmitters is a chemical which actually carries the the impulses across the synapses. The neurotransmitters actually move from the end of axon, of one neuron to the dendrite of the next neuron across the synaptic cleft carrying the message with them.