What role do nervous tissues perform in the body?

Nervous tissue plays a critical role in coordinating movement within the body. This tissue is composed of neurons and supporting glial cells, which work together to transmit signals information between different parts of the body and the brain. Neurons carry electrical impulses that enable communication, allowing for the precise coordination of muscle contractions and reflexes necessary for movement.

When stimulated, sensory neurons send signals from sensory receptors to the central nervous system (CNS), where the information is processed. The CNS then sends signals through motor neurons to muscles, initiating movement. This intricate communication system allows organisms to respond to their environment effectively, making it essential for voluntary and involuntary movements.

In contrast to the other roles mentioned in the options, nervous tissue does not primarily function to power locomotion directly, protect organs, or form barriers. While these functions are important (muscle tissue powers locomotion, connective tissue protects organs, and epithelial tissue creates barriers), they do not involve the central role of nervous tissue in coordinating and regulating bodily movement and responses.