Final answer:
The embryonic nerve cell's axon tip is called a growth cone. A bundle of axons in the peripheral nervous system is known as a nerve and the neural crest is critical for the development of this system.
Step-by-step explanation:
The tip of an embryonic nerve cell's axon is called a growth cone. This specialized structure is dynamic and motile, and it plays a crucial role in the guidance of the developing axon to its synaptic target. The growth cone responds to various external cues and signals that direct the axon's growth and connection with other neurons or target cells in the body.
In the context of the peripheral nervous system, a bundle of axons is referred to as a nerve. Axons are the elongated projections of neurons that transmit electrical signals to target cells. The structure associated with the embryologic development of the peripheral nervous system is the neural crest.
Neurons have specialized structures, including dendrites and axons, for transmitting nerve impulses. Axons carry the signal away from the cell body, or soma, to the target, while dendrites carry the signal toward the cell body.