Memory AP Psych TermsVersion en ligne Neurons and the Brain par Alex Trinh Agonist Chemical messengers that cross the synaptic gaps between neurons Interneuron Antagonist Neurons that carry outgoing information from the brain and spinal cord to the muscles and glands Neurons that carry incoming information from the sensory receptors to the brain and spinal cord Sensory Neurons A molecule that, by binding to a receptor site, inhibits or blocks a response Neurotransmitter Synapse Motor Neuron Myelin Sheath The junction between the axon tip of the sending neuron and the dendrite of the receiving neuron 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 A molecule that, by binding to a receptor site, stimulates a response