No.
Association neurons, or interneurons, connect 2 or more neurons and therefore are bipolar or multipolar. An example is the unipolar (or pseudounipolar) sensory neuron that connects, or forms a synapse, with a dorsal horn neuron which is an interneuron that connects with another neuron in the brainstem, i.e. in the geniculate or cuneate nuclei. Interneurons provide a point where information can be modulated, i.e. a stimulus can be excited or inhibited by input from other neurons.
Unipolar neuron cell bodies are located in the dorsal root ganglia that receive afferent information from the periphery and transmit that information to the dorsal horn of the spinal cord. Because most authors report these neurons do not truly have only one process, but have a fused central and peripheral process, they are often referred to as pseudounipolar.
The "Tigger zone" in a unipolar neuron is the initial segment of the axon where action potentials are generated. Here, graded potentials from the dendrites accumulate and if they reach a certain threshold, an action potential is triggered.
bipolar neuron
The location of dendrite and axon: If dendrite and axon emerge from same process, the neuron is unipolar. If dendrite and a single axon emerge from opposite ends of the soma, the neuron is bipolar. If the neuron has more than 2 dendrite it is called multipolar.
Sensory neurons are typically unipolar in structure. This means they have a single process, or neurite, that extends from the cell body and splits into two branches, one leading to the peripheral nervous system and one leading to the central nervous system.
The most common type of neuron found in the central nervous system is the multipolar neuron. These neurons have many dendrites and a single axon extending from the cell body. Multipolar neurons are involved in processing and transmitting information in the brain and spinal cord.
Afferent
Small ones
unipolar (pseudounipolar)
The "Tigger zone" in a unipolar neuron is the initial segment of the axon where action potentials are generated. Here, graded potentials from the dendrites accumulate and if they reach a certain threshold, an action potential is triggered.
The location of dendrite and axon: If dendrite and axon emerge from same process, the neuron is unipolar. If dendrite and a single axon emerge from opposite ends of the soma, the neuron is bipolar. If the neuron has more than 2 dendrite it is called multipolar.
bipolar neuron
The location of dendrite and axon: If dendrite and axon emerge from same process, the neuron is unipolar. If dendrite and a single axon emerge from opposite ends of the soma, the neuron is bipolar. If the neuron has more than 2 dendrite it is called multipolar.
Sensory neurons are typically unipolar in structure. This means they have a single process, or neurite, that extends from the cell body and splits into two branches, one leading to the peripheral nervous system and one leading to the central nervous system.
The Inter-neuron (also known as the local circuit neuron, relay neuron or the association neuron) is the neuron which connects the afferent and the efferent neurons in the neural pathways.
Association neurons
The most common type of neuron found in the central nervous system is the multipolar neuron. These neurons have many dendrites and a single axon extending from the cell body. Multipolar neurons are involved in processing and transmitting information in the brain and spinal cord.
The patellar reflex is an example of a 2-neuron reflex arc. It has 1 sensory neuron and 1 motor neuron. It does not contain an association neuron and so is considered the most simple reflex in humans.