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