Types of Neurons by Structure - Neuroanatomy Basics - Anatomy Tutorial

Unipolar neurons have only one process and are found in invertebrates. Humans have pseudo-unipolar neurons, which have one process that then splits into two axonal branches. These are exclusive to sensory neurons and lack dendrites. An example is a sensory neuron from a dorsal root ganglion transmitting sensation from the periphery to the spinal cord.

Bipolar neurons have two processes extending from the cell body: one axon and one dendrite. They are less common and found in specific areas like the olfactory epithelium and the retina.

Multipolar neurons are the most common type, accounting for most neurons in the body. They have one axon and several dendrites.

Anaxonic neurons lack axons and therefore cannot produce action potentials. Instead, they undergo local or graded potentials.

The basic classification of neurons includes unipolar (or pseudo-unipolar in humans), bipolar, and multipolar types.

This video will cover the three main types of neurons: unipolar, bipolar, and multipolar neurons.