Researchers have used this information about neurotransmitters in the brain in their efforts to create therapeutic drugs, such as those used to alleviate depression. Some drugs mimic a natural neurotransmitter, while others block its effects. Still others work by hampering the neurotransmitter's natural breakdown or its reabsorption. Neural and Hormonal Systems 4. Identify the major divisions of the nervous system and describe their functions, noting the three types of neurons that transmit information through the system.
Neurons communicating with other neurons form our body's primary system, the nervous system.
The brain and spinal cord form the central nervous system . The peripheral nervous system links the central nervous system with the body's sense receptors, muscles, and glands. The sensory and motor neurons carrying this information are bundled into the electrical cables we know as nerves. The Brain Histology of the Peripheral Nervous System Sensory neurons send information from the body's tissues and sensory organs inward to the brain and spinal cord. Interneurons of the brain and spinal cord process the information.