When an individual has allergies it causes excess mucus to be produced in the nasal passages and sinus cavities. This excess of mucus cannot drain correctly and effectively out the nasal passages at times and as a result, the mucus containing foreign particles flows down the back of the throat, causing post nasal drip.
They transmit signals across a chemical synapse, such as in a neuromuscular junction, from one neuron (nerve cell) to another target neuron, muscle cell, or gland cell. Neurotransmitters are released from synaptic vesicles in synapses into the synaptic cleft, where they are received by receptors on other synapses.
Neurotransmitters and hormones are both chemical messengers, which are released from one cell and are designated to carry a signal to a target cell elsewhere in the body.When â¦ the target cell is reached, it will trigger a specific response in that cell.The major difference is that neurotransmitters are specific to nerve tissue, and travel from one neuron to the next. The target cell is the next neuron; it is a short distance which is traveled very quickly.hen â¦ the target cell is reached, it will trigger a specific response in that cell. The major difference is that neurotransmitters are specific to nerve tissue, and travel from one neuron to the next. The target cell is the next neuron; it is a short distance which is traveled very quickly.