Primary role of nervous tissue?

• A. Detects stimuli and transmits electrical impulses for communication and coordination within the body
• B. Stores energy
• C. Forms glands
• D. Provides structural support

Answer: (A)

Nervous tissue is specialized for sensing changes in the body and rapidly communicating information through electrical signals. It can detect stimuli via nerve receptors and convert those signals into nerve impulses that travel along neurons to the brain, spinal cord, or to effectors. This enables quick communication and coordination of sensations, reflexes, movement, and bodily functions. Glial cells support this system by nourishing neurons, maintaining their environment, and insulating some nerve fibers to speed up signal transmission.

Other tissues serve different primary roles. Adipose tissue stores energy, epithelial tissue forms glands, and connective tissue (including bone and cartilage) provides structural support. So the central function of nervous tissue—detecting stimuli and transmitting fast electrical signals for coordination—sets it apart.