Which of the following is NOT a function of the nervous system?

The function of regulating hormone levels directly is not primarily attributed to the nervous system. While the nervous system does interact with the endocrine system and can influence hormone release through signals and feedback loops, the direct regulation of hormone levels is mainly the role of glands within the endocrine system, such as the pituitary gland or thyroid gland.

In contrast, sending signals to muscles, processing sensory information, and integrating information for responses are fundamental functions of the nervous system. These processes encompass motor control, sensory perception, and coordination of bodily responses, which are essential for maintaining homeostasis and responding to the environment. Therefore, selecting the option regarding direct hormone regulation accurately reflects an understanding of the distinct roles played by the nervous and endocrine systems in the body.