Most of the Neurons in the Brain and Spinal Cord

Question

Most of the neurons in the brain and spinal cord are
A)bipolar.
B)unipolar
C)multipolar.
D)nonpolar.

Accepted Answer

The majority of neurons in the brain and spinal cord are multipolar, meaning they have multiple branching dendrites and a single axon. This type of neuron is well-suited for transmitting and integrating information across long distances within the nervous system. Bipolar neurons have one dendrite and one axon and are found in sensory organs such as the retina of the eye. Unipolar neurons have a single process that splits into an axon and dendrite and are found in sensory ganglia outside of the brain and spinal cord. Nonpolar neurons do not exist, as all neurons have some sort of polarity or electrical charge separation.