Neurons that carry incoming information from the sensory receptors to the brain and spinal cord
Chemical messengers that cross the synaptic gaps between neurons
Neurotransmitter
Myelin Sheath
A molecule that, by binding to a receptor site, inhibits or blocks a response
Antagonist
A molecule that, by binding to a receptor site, stimulates a response
Neurons that carry outgoing information from the brain and spinal cord to the muscles and glands
Sensory Neurons
Agonist
Motor Neuron
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
Interneuron
Synapse
