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