Abstract
This investigation was undertaken to demonstrate the cytogenesis of cardiac ganglia in prenatal rats from day 14 to days 16, 18, 20, and 21 of gestation (D14-16, D18, D20-21) . Special attention was given to the relationship between the differentiation and the maturation of organelles in the developing ganglion cells. In the cardiac ganglion of the prenatal rat, the undifferentiated cells differentiated into neuroblasts, which can be subdivided into apolar, early bipolar, intermediate bipolar, and late bipolar neuroblasts. The immature neuron, derived from the late bipolar neuroblasts, can be further divided into early and late immature neurons. This coincides with the differentiation and maturation of the ganglion cells. Well-developed Golgi complex, rough endoplasmic reticulum, and mitochondria, increased predominantly. During the developmental stage of the neuroblast, only part of its cell body was surrounded by satellite cells. However, the cell bodies of immature neurons and their afferent axon terminals were completely ensheathed by satellite cells. It is concluded that the number and maturity of organelles of the ganglion cell increase concomitant with its differentiation and maturation.
