What is the primary function of muscle tissues?

The primary function of muscle tissues is to power locomotion, which encompasses the ability to move the body as well as different parts of the body. Muscle tissues are specialized for contraction and are crucial for a variety of movements, from gross motor functions like walking and running to fine motor skills such as typing or writing.

Muscle tissues, which include skeletal, cardiac, and smooth muscles, work by responding to neurological signals, contracting, and, in turn, generating the force required for motion. This activity is essential for daily life, allowing organisms to navigate their environments, evade predators, and interact with other individuals.

While other options pertain to important biological functions—like transporting nutrients, providing immunity, and serving a structural role—these are not the primary functions of muscle tissues specifically. Instead, those functions are associated with other systems, such as the circulatory system for transport, the immune system for protection, and connective tissues providing structural support.