The spaces between neutrones through which impulses cross by means of chemical reaction are called

The spaces between neurons through which impulses cross by means of chemical reaction are called "synapses". Neurons are nerve cells that transmit information to other nerve cells or muscles in the body. Synapses are the connection points between two neurons or between a neuron and a muscle cell. When a neuron fires an electrical impulse, it releases chemical messengers called neurotransmitters into the synapse. These neurotransmitters then bind to receptors on the receiving neuron or muscle cell, causing it to either fire its own electrical impulse or trigger a muscle contraction. Synapses play a crucial role in the communication between neurons and are essential for normal brain function and behavior.