What is a synapse?

Explanation: .A synapse is a junction between two neurons that allows the transmission of a nerve impulse from one neuron to anotherThe two types of synapses are electrical synapses and chemical synapses. Electrical synapses are characterised by the close proximity of the membranes of pre- and post-synaptic neurons, while chemical synapses use chemical neurotransmitters to transmit impulses.The action potential is generated in response to a stimulus and travels along the length of the axon, transmitting the nerve impulse. The rise in permeability to Na⁺ is short-lived and is followed by a rise in permeability to K⁺. K⁺ diffuses outside the membrane, restoring the resting potential of the membrane.