Which types of muscle tissue are present in animals?

The presence of skeletal, cardiac, and smooth muscle in animals is fundamental to their physiological functions and movement. Skeletal muscle is attached to bones and is responsible for voluntary movements, allowing animals to move in their environment. It is characterized by its striated appearance and ability to contract quickly.

Cardiac muscle is found exclusively in the heart and is responsible for pumping blood throughout the body. It is also striated but differs significantly in that it operates involuntarily and has unique intercalated discs that facilitate synchronized contractions necessary for effective heart function.

Smooth muscle, on the other hand, is found in the walls of hollow organs such as intestines and blood vessels. It is non-striated and operates involuntarily, enabling functions such as digestion and regulation of blood flow.

These three types of muscle tissue work together to maintain crucial body functions, contributing to the overall homeostasis and movement in animals. The other options either include incorrect types of muscle tissue, such as elastic or vascular muscle, which are not classifications of muscle tissue in animals.