What are some muscular organs?

Muscular organs are those primarily composed of muscle tissue and are capable of contraction. Key examples include the heart, which pumps blood throughout the body, and the stomach, which aids in digestion by mixing and breaking down food. Other examples include the bladder, which stores urine and expels it through muscle contractions, and the uterus, which plays a crucial role in reproduction. These organs utilize smooth, cardiac, or skeletal muscle types to perform their functions.