Primarily each bipolar cell is a spindle-shaped cell with axon and dendrite emerging from opposite poles of the spindle (Fig. 9), In a few instances, e.g. the ganglia of the auditory nerve (nerve of hearing), this form is retained in the adult.
Usually, however, the growth of the cell proceeds in a unilateral manner, with the result that the two poles gradually fuse with one another to form a single process with a T-shaped or Y-shaped bifurcation. This is sometimes described as a unipolar cell (Fig. 10). The cells of the bipolar group belong to sensory neurons.
Human nervous system
The Animal Cell
Nerve Cells and Nerve Fibres
Nature of the Nerve Impulse
Specific Energy of Nerves
General Construction and Development of the Nervous System
The Spinal Cord
The Chief Fibre Systems of the Cerebro-Spinal Axis
The Areas of Localisation on the Cerebral Cortex
The Sense Organs
Human Brain Anatomy
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