Axons sort themselves over the surface of the target area:
A) by following a gradient of chemicals.
B) through apoptosis.
C) through necrosis.
D) based on their size.

Question

Quizplus · Accepted Answer

Axons sort themselves over the surface of the target area by following a gradient of chemicals, which are produced by the target cells. This process is known as chemotaxis and helps to guide axons to their intended target. The target cells release attractive chemicals, or chemoattractants, which the axons detect and move toward. In contrast, repellent chemicals, or chemorepellents, cause the axons to move away from certain areas. By following chemical gradients, axons are able to find their way to the appropriate target and form functional connections.

Axons Sort Themselves Over the Surface of the Target Area