#Pseudounipolar axon vs dendrite skin#

#Pseudounipolar axon vs dendrite skin#

The dendrites of sensory afferent neurons are often specialized to receive inputs from a peripheral sensory receptor (as in the vestibular and auditory systems), or may be a component of the peripheral sensory receptor (as in the skin and muscle). The term 'afferent' means 'carrying into,' and usually describes the transmission of information towards the brain and spinal cord. Sensory afferent neurons carry inputs from sensors in the periphery to the central nervous system. Inhibitory synaptic transmission makes it less likely that a neuron will generate an action potential. Inhibitory synapses are usually located on the shaft of the dendrites, the cell body, and the initial segment. Dendritic spines are typically sites of excitatory synapses, where synaptic transmission makes it more likely that the neuron will generate an action potential. The neuron pictured on the left has dendritic spines. Interneurons are integrators, and the main components of the neural circuits that process information in the nervous system.

Thus, one interneuron can receive synaptic inputs on their dendrites and cell body from thousands of neurons, and in turn send outputs to many other interneurons, or perhaps to cells that provide outflow from the nervous system to peripheral targets like muscle or glands. Most interneurons are multipolar neurons, as they have many dendrites as well as an axon that branches to multiple targets. The processes of interneurons always remain within the central nervous system, although some projection (or relay) interneurons may have long axons that extend for considerable distances (i.e., from the brain to the spinal cord). Interneurons are the most common cells in the central nervous system. To start, let's discuss the general classes of neurons, and their anatomy: Most neurons have multiple dendrites and one axon, which can branch near where it reaches its target. In general, neurons receive inputs from other nerve cells on the dendrites and cell body, and transmit outputs to other neurons or effectors like muscle cells through an axon. Not all neurons are the prototypical cells described in the KhanAcademy video.