Visceral organs are the internal organs located within the main cavities of the body, primarily in the thoracic and abdominal regions. These organs include the heart, lungs, liver, stomach, intestines, and kidneys. They play essential roles in various bodily functions, such as digestion, respiration, and circulation. These organs are often referred to as "soft organs" because they are not surrounded by bone, unlike skeletal structures. Visceral organs are vital for maintaining homeostasis, which is the body's ability to maintain a stable internal environment despite external changes.