A dendritic spine (or spine) is a small membranous protrusion from a neuron's dendrite that typically receives input from a single axon at the synapse.
Axon
An axon (from Greek ἄξων áxōn, axis), is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.
Dendrite
Dendrites (from Greek δένδρον déndron, "tree") (also dendron) are the branched projections of a neuron that act to propagate the electrochemical stimulation received from other neural cells to the cell body, or soma, of the neuron from which the dendrites project.
Bipolar neuron
A bipolar cell is a type of neuron which has two extensions.
Unipolar neuron
A unipolar neuron is a type of neuron in which only one protoplasmic process (neurite) extends from the cell body.
Rostral ventromedial medulla
The rostral ventromedial medulla (RVM), or ventromedial nucleus of the spinal cord, is a group of neurons located close to the midline on the floor of the medulla oblongata (myelencephalon).
Axolemma
The axolemma is the cell membrane surrounding an axon.
Arcuate nucleus (medulla)
In the medulla oblongata, the arcuate nucleus is a group of neurons located on the anterior surface of the medullary pyramids.
Spinal interneuron
A spinal interneuron is an interneuron found in the spinal cord that relays signals between afferent neurons and efferent neurons.
Node of Ranvier
Nodes of Ranvier, also known as myelin sheath gaps, are periodic gaps in the insulating myelin sheaths of myelinated axons where the axonal membrane is exposed to the extracellular space.
Axon hillock
The axon hillock is a specialized part of the cell body (or soma) of a neuron that connects to the axon.
Axoplasm
Axoplasm is the cytoplasm within the axon of a neuron (nerve cell).
Neurolemma
Neurolemma (also known as neurilemma or sheath of Schwann (Schwann's Sheath)) is the outermost nucleated cytoplasmic layer of Schwann cells (also called neurolemmocytes) that surrounds the axon of the neuron.