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