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.
Figure- The synchrony between the three major system of human body. The major differences between hormones and neurotransmitters are as follows-. â¢ Neurotransmitters belong to the nervous system, whereas hormones belong to the endocrine system. â¢ Transmission of neurotransmitters is across the synaptic cleft, whereas that of hormones is by blood. â¢ Hormones are produced by endocrine glands while neurotransmitters are produced by neurons.