Neurons are to neurotransmitters as endocrine glands are to
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. 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.