Memory AP Psych TermsVersión en línea Neurons and the Brain por Alex Trinh Neurotransmitter Synapse Neuron within the brain and spinal cord that communicate internally and intervene between the sensory inputs and motor outputs Motor Neuron Agonist Chemical messengers that cross the synaptic gaps between neurons Neurons that carry incoming information from the sensory receptors to the brain and spinal cord Antagonist Sensory Neurons Neurons that carry outgoing information from the brain and spinal cord to the muscles and glands A molecule that, by binding to a receptor site, stimulates a response The junction between the axon tip of the sending neuron and the dendrite of the receiving neuron A fatty tissue layer encasing the axons of some neurons; enables greater transmission speed Interneuron A molecule that, by binding to a receptor site, inhibits or blocks a response Myelin Sheath