NEET BIOLOGY

Detailed explanation-1: -Neurons communicate with one another at junctions called synapses. At a synapse, one neuron sends a message to a target neuron-another cell. Most synapses are chemical; these synapses communicate using chemical messengers. Other synapses are electrical; in these synapses, ions flow directly between cells.

Detailed explanation-2: -When the nerve impulse reaches the dendrites at the end of the axon, chemical messengers called neurotransmitters are released. These chemicals diffuse across the synapse (the gap between the two neurons). The chemicals bind with receptor molecules on the membrane of the second neuron.

Detailed explanation-3: -2)The nerve impulse is transferred through the neurons and there is a gap present between all the neurons that are also known as the synapse. 3)The nerve impulse travels from one neuron to another through synapse and this transmission of impulse is known as synaptic transmission.

Detailed explanation-4: -In contrast, in an electrical synapse, the impulse travels in both directions. Also, across a chemical synapse, the impulse is transmitted with a 0.5-millisecond delay, while across an electrical synapse, the delay is almost non-existent.