The First Step in Any Type of Neural Action Is

Question

The first step in any type of neural action is _______.
A) transmission of impulses to the spinal cord
B) integration in the brain
C) transmission to the brain
D) receptors receive a stimulus

Accepted Answer

The first step in any neural action is the reception of a stimulus by receptors, which can be in various forms such as light, pressure, or chemicals. This initiates a series of events that ultimately leads to the transmission of impulses to the brain for processing and integration. However, the initial step always involves the response of receptors to a stimulus. Therefore, option D is the correct answer. Options A, B, and C occur after the initial step of receptor response.