What does the nervous tissue primarily consist of?

The primary components of nervous tissue are the brain, spinal cord, and nerves. Nervous tissue is specialized for transmitting impulses and facilitating communication between different parts of the body. This tissue consists mainly of two types of cells: neurons, which are responsible for transmitting signals, and glial cells, which provide support, protection, and nourishment to neurons.

The brain is the central organ of the nervous system, responsible for processing sensory information, coordinating movement, and regulating bodily functions. The spinal cord acts as a conduit for information traveling between the brain and the rest of the body, while peripheral nerves extend throughout the body to relay signals to and from the central nervous system.

Understanding the structure and function of nervous tissue is crucial because it underpins many biological processes, including reflexes, sensory perception, and motor control. Hence, the presence of the brain, spinal cord, and nerves as the main components of nervous tissue makes this answer accurate and central to the study of human anatomy and physiology.