Online Wiring Diagram

True unipolar neuron s are mostly found in invertebrates and vertebrate embryos. The structural and functional unit of the human nervous system, neuron s are nerve cells that transmit nerve impulses. The human nervous system is composed of more than 10 billion neuron s. On the basis of their function, neuron s are classified into sensory, motor, and associated neuron s. Sensory neuron s conduct information in the form of nerve impulse from the receptor cell or organs (eyes, ears, nose, tongue, skin) to the nerve centers in the brain or the spinal cord. On the other hand, motor neuron s convey impulses from the central nervous system to an effector such as a muscle, thereby facilitating muscle movements. The associated neuron s, which are also called inter neuron s, relay signals between the motor and sensory neuron s. When the classification is made on the basis of the structure or the shape of the neuron s, neuron s are divided into unipolar , pseudo unipolar , bipolar, and mult...

Start studying multipolar neuron . Learn vocabulary, terms, and more with flashcards, games, and other study tools. A multipolar neuron has multiple dendrites extending from the cell body and a single axon extending in the opposite direction. A bipolar neuron has a single dendrite that extends from the cell body, opposite the side from which the single axon extends. Figure 12.10 Other Neuron Classifications Three examples of neuron s that are classified on the basis of other criteria. (a) The pyramidal cell is a multipolar cell with a cell body that is shaped something like a pyramid. (b) The Purkinje cell in the cerebellum was named after the scientist who originally described it. Multipolar neuron diagram