Heart: A muscular organ located in the chest, slightly left of the midline. It pumps blood throughout the body, delivering oxygen and nutrients to tissues and removing waste products.



Lungs: Paired organs situated in the chest cavity, responsible for gas exchange. Oxygen is taken in and carbon dioxide is expelled during breathing.



Liver: The largest internal organ, located in the upper right abdomen. It performs a variety of functions, including detoxification, protein synthesis, and the p...