The point of contact between neurons.

The point of contact between neurons is known as a synapse. Here's a step-by-step explanation:

1. Neurons are the basic units of the nervous system, responsible for receiving sensory input from the external world, processing and interpreting it, and directing how our bodies respond to this information.

2. These neurons communicate with each other using a complex network. The point where a neuron can transfer an electrical or chemical signal to another neuron is called a synapse.

3. The neuron transmitting the signal is known as the presynaptic neuron, while the neuron receiving the signal is known as the postsynaptic neuron.

4. The presynaptic neuron releases chemical messengers, known as neurotransmitters, into the synapse.

5. These neurotransmitters cross the synapse and bind to receptors on the postsynaptic neuron. This can either trigger or inhibit a response in the postsynaptic neuron.

6. After the neurotransmitters have been released, they are either reabsorbed by the presynaptic neuron (a process known as reuptake), degraded by enzymes, or simply diffuse away.

7. This process of synaptic transmission allows neurons to form circuits within the nervous system, enabling communication throughout the body.