What principally transmits impulses throughout the body?

Nervous tissue is responsible for transmitting impulses throughout the body, making it integral to the functioning of the nervous system. It is composed of neurons, which are specialized cells that can generate and transmit electrical signals. This ability allows for communication between different parts of the body, facilitating responses to stimuli, coordination of bodily functions, and the processing of information.

In contrast, muscle tissue primarily focuses on movement and contraction, while connective tissue serves to support, bind, and protect other tissues and organs. Bone tissue, a type of connective tissue, provides structure and support but does not play a role in impulse transmission. Therefore, nervous tissue is the clear choice for the primary medium of impulse transmission throughout the body.