In a neural pathway, what is a synapse?

Answer 1

Synapse is the junction between two nerve cells. There are
1. presynaptic axonic terminal,
2. synaptic cleft and
3. postsynaptic dendritic membrane
in a synapse.

Synapse is a structural entity in nervous system where axon terminal of one neuron and dendritic terminal(s) of other neuron remain in close association but these terminals remain physically separated by a small microscopic gap called synaptic cleft.

When a nerve impulse reaches presynaptic axonic end, neurotransmitter substances are released from axonic terminal. Such neurohumor substances diffuse through synaptic cleft and are picked up by receptors present on membrane of dendritic terminal. This leads to formation of action potential in postsynaptic neuron.

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Answer 2

Victoria Angeli

A postsynaptic membrane, a synaptic cleft, and neurotransmitters released from the presynaptic terminal cross the synaptic cleft and bind to receptors on the postsynaptic membrane to allow signals to be transmitted between neurons or from neurons to other types of cells. A synapse is a specialized junction where electrical or chemical signals are transmitted between two neurons, or between a neuron and a target cell (such as a muscle cell or gland cell).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.