Human internal organs anatomy refers to the study of the organs located inside the human body that are essential for various physiological functions. These organs include the heart (pumps blood), lungs (facilitate breathing and oxygen exchange), stomach and intestines (digest and absorb food), liver (filters toxins and produces bile), kidneys (filter waste and regulate fluid balance), brain (controls body functions), and bladder (stores urine). These organs work together to maintain homeostasis, support metabolism, and ensure overall health and proper bodily function.