Synapse
Neuron within the brain and spinal cord that communicate internally and intervene between the sensory inputs and motor outputs
Antagonist
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
Neurotransmitter
Agonist
A fatty tissue layer encasing the axons of some neurons; enables greater transmission speed
Motor Neuron
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, inhibits or blocks a response
Neurons that carry incoming information from the sensory receptors to the brain and spinal cord
Interneuron
Sensory Neurons
Myelin Sheath
Chemical messengers that cross the synaptic gaps between neurons