36C. Give two derivatives of the neural crest cells in the peripheral nervous system.

Neural crest cells are a unique population of multipotent cells that emerge during embryonic development. They give rise to various cell types in the peripheral nervous system (PNS). Here are two derivatives of neural crest cells in the PNS:

1. Dorsal root ganglia (DRG) neurons: These neurons are responsible for transmitting sensory information from the peripheral tissues to the central nervous system (CNS). They play a crucial role in processing sensory input including touch, pain, and temperature from the body's periphery.

2. Autonomic ganglia: Neural crest cells also differentiate into various types of autonomic neurons, which are essential components of the autonomic nervous system. These include sympathetic and parasympathetic neurons that regulate involuntary functions such as heart rate, digestion, and respiratory rate.

Neural crest cells are vital for the development and function of these structures, emphasizing their importance in the overall organization of the peripheral nervous system.